Tag: peregrine

Lessons in eagle ecology part 2

Hot off the press from the team who brought you Eagles Could Eat Children (see here), this month’s lesson is all about Why Eagles Don’t Nest on Grouse Moors.

Contrary to the endless scientific papers that show unequivocally that eagles (and lots of other raptor species) are absent from many upland grouse moor areas in the UK due to high levels of persecution, the Scottish Gamekeepers Association has today informed us of the real reason they’re absent:

“Many grouse moors do not have the isolated nesting habitat which is required by eagles so it should come as no surprise they don’t nest there“.

Strange then, that there are ‘many’ (see quote below) unoccupied eagle nesting territories in Scotland where eagles are known to have bred historically, and that these old nest sites just happen to be on land that is managed for red grouse shooting! Here’s a quote from the Golden Eagle Conservation Framework Report that was published by Scottish Natural Heritage in 2008 (available here) –

“The most serious failures to meet favourable conservation status tests were in Natural Heritage Zones in the central and eastern Highlands where less than half of all known territories were occupied. Based on the production of young golden eagles, the populations in these regions should be expanding markedly, but instead they continue to decline (there was a loss of 15 occupied territories between 1992 and 2003, and 86 vacant territories by 2003). This indicates, in the absence of any evidence for emigration, that survival of subadult and/or adult birds is low“.

It’s also strange that before the sentence about ‘many grouse moors do not have the isolated nesting habitat required by eagles’, the SGA tells us this: “A large portion of all eagles fledging takes place on grouse moors across Scotland“. Eh? How can that be, if the habitat ‘isn’t there’?

The SGA article continues with some name-calling (and this from the group who have recently complained to the Scottish Government about how they were being portrayed!) and then some partly-accurate but mostly inaccurate information about siblicide amongst eaglets, before getting in another dig at the Irish Golden Eagle Reintroduction Project (yawn). This all builds up to a grand finale where we’re told:

“If you were to read all the media reports you could be forgiven for thinking that raptors only breed safely on reserves. The truth is there are possibly 500’000 raptors in the UK and 350’000 of them will be breeding successfully on land used for game sport shooting of some kind. This fact is completely ignored by those attempting to take the moral high ground“.

Hmm, I’d be really interested to see the data that this “fact” is based upon. Especially in light of the recently published scientific paper (see here) that shows, again unequivocally, that peregrines nesting on grouse moors in northern England are 50% less successful than peregrines that breed on non-grouse moor habitat.

Interestingly, the SGA article makes no comment about the poisoned buzzard and poisoned bait that was found on Glenlochy Estate and was reported in the media two days ago (see here). The SGA wouldn’t be trying to deflect attention from yet another disgusting and illegal poisoning incident, would they?

SGA article here

Poisoning by numbers

Last week the RSPB published its annual UK-wide report on raptor persecution (Birdcrime 2010, see here). We said we’d comment on the report once we’d had a chance to read it. Others chose to comment on the day of its release, or to be more accurate, their commentary was probably written prior to the release and was probably based on the content of the RSPB’s press release, rather than on the actual report’s content (see here).

Birdcrime 2010 held few surprises for many of us. The report carried details of raptor persecution incidents (confirmed, probable and possible) that had been reported throughout 2010, so by not publishing the report until November 2011, many of the items could be considered ‘old news’ (or at least those incidents that had been previously reported in the media – as usual, there were several incidents recorded in this report that were not made public at the time they occurred). That’s not to say the report has no value – it is an immensely important document because it is still the only publication to collate these national statistics in one place. It would just be more useful if it could be published at the beginning of the following year to which the report relates, rather than at the end of the following year, but limited RSPB staff resources may prevent this.

One advantage of publishing the report so late is that information can be provided on the outcome of criminal proceedings for those persecution incidents that actually made it to court. For example, the report provides some previously unpublished information about the trial of gamekeeper Glenn Brown, who was found guilty in June 2011 of operating an illegal trap to take birds of prey (amongst other crimes) on Howden Moor in the Peak District in April and May 2010 (see here, here and here). According to Birdcrime 2010, Judge Caroline Goulbourn “ruled that she viewed the attack on the integrity of the RSPB investigations staff by Bertie Woodcock QC on behalf of Knights Solicitors as an aggravating factor in the case. In addition, she criticised Brown’s employer, Geoff Eyre, who leases Howden Moor from the National Trust, for being evasive and reluctant to answer questions” [Birdcrime 2010, p.17].

Incidentally, there is further detail about this case that has been written in the RSPB’s newsletter, Legal Eagle 65. On page 2 the following has been written: “During the ten day trial, the prosecution relied on expert evidence including Prof Ian Newton, Dr Mick Marquiss, Stewart Scull, Dr Alisdair Wood and Guda van der Burght. The defence case, led by Bertie Woodcock QC, centred on the fact that Brown was not using the trap and the entire investigation was a set up with RSPB officers acting in bad faith throughout”. It’s good to see that Judge Goulbourn ruled against this, although what will happen at Brown’s impending appeal remains to be seen. Legal Eagle 65 reports that this appeal “is expected to take place in 2012”.

In addition to the case studies of earlier persecution incidents, Birdcrime 2010 reports that annual poisoning figures were down from 2009 (128 reported poisoning incidents in 2010, compared to 153 in 2009). It also reports that the 2010 figure is below the average for the last five years (2005-2009 average of 150 incidents). Unsurprisingly, it is this aspect that has been picked up on by the game-shooting lobby (e.g. see here). There has also been much made in the media this year about the ‘low’ poisoning figures for 2011 (e.g. see here) – although the published figures only relate to the first half of 2011; figures from June 2011 onwards are not yet available. So is this a sign of progress, as many of the game-shooting lobby would have us believe, or is it indicative of something else? For example, the lower figures could well be an indication that the gamekeepers have finally seen the light and have decreased their poisoning efforts. On the other hand, it could be an indication that gamekeepers are either (a) getting better at hiding their crimes, (b) switching to other persecution methods such as shooting, which is less likely to be detected, or (c) reporting efforts by the authorities have fallen. At this point I don’t think that either ‘side’ can claim a ‘victory’ in the on-going war of words. It is far too early to tell. For example, if you look at the graph that was published in the RSPB’s earlier report, The Illegal Killing of Birds of Prey in Scotland in 2010 (see here), then this reported decline in poisoning incidents can be seen in much clearer context. The graph I’m referring to appears on page 11 of that report and shows the number of confirmed poisoning incidents in Scotland from 1989-2010. The graph has been recreated for this post – see below (thanks to the contributor who sent it!).

If you look closely at the graph, you will see a great deal of variation between years in the number of confirmed poisoning incidents. Of particular interest are the years 1994 and 1995 – in these two years, confirmed poisoning incidents dropped to a low of 15 from a previous high of 35+. However, if you then look at the following three years, the number of confirmed incidents steadily rose until they reached 35+ again. In 1999, the figure dropped again to 15, and from then until 2010, that figure has steadily risen and fallen, although never reaching the low of 15 again. So what does that tell us? I’m fairly sure that in the years 1994 and 1995, the game shooting lobby would have declared a ‘victory’ as the figures had dropped so much, and would have shouted from the hilltops that they’d changed their ways.  I’m also fairly sure that in the following three years when the figures rose again, the conservationists would have declared a ‘victory’ and pronounced that their claims of widespread persecution had been vindicated. Either way, it is clear that neither ‘side’ can draw conclusions just based on an annual figure; for a trend to be detected, we need to see long-term figures.

But do these figures actually provide the full picture? If you read the recent paper on historical persecution at Atholl Estate (see here), then it’s pretty obvious that the ‘official’ persecution figures are meaningless, in the sense that they don’t tell the whole story. And from a conservation perspective, the figures, whether accurate or not, are not really that important. To steal a line from the recent paper on peregrine persecution on grouse moors (see here), “….it is the population level impact that is important, rather than the number of confirmed persecution cases”. We now have peer-reviewed scientific studies that have shown how persecution on grouse moors is having a population level impact on several vulnerable species (golden eagle, hen harrier, red kite and now peregrine). We have yet to see any peer-reviewed scientific studies that can counter these findings and show that these species are NOT impacted by persecution on grouse moors at a population scale. Why do you think that is, and more to the point, what are our politicians going to do about the published findings, apart from telling us that the Scottish government’s support for grouse shooting “goes beyond words“? (see here). Let’s hope that support doesn’t go beyond action as well.

New study shows extent of peregrine persecution on grouse moors

A new study has just been published in the international scientific journal Biological Conservation. Following hot on the heels of earlier studies that have demonstrated how illegal persecution on UK upland grouse moors is affecting the conservation status of golden eagles, hen harriers, red kites and goshawks, the latest study shows the damage that this disgusting practice is having on a population of peregrines in northern England.

You need to be a subscriber to the journal Biological Conservation to access the full paper (or alternatively you can buy it [see link at foot of this post] or you can google the paper’s lead author, Dr Arjun Amar, to see if he’ll send you a free PDF for your own private use), but here is the published abstract:

Wildlife crime can be difficult to quantify, and its true impact on populations can be underestimated if rates are under-recorded. The illegal killing of birds of prey is an important form of wildlife crime, which in the UK, is often associated with land managed for the recreational shooting of red grouse Lagopus lagopus scoticus. In the UK, increases in peregrine falcons Falco peregrinus following recovery from organo-chlorine pesticides have not been uniform, with slow growth and localised declines in some areas, including those managed for red grouse shooting. In this study, we combined 1081 peregrine nest histories across northern England between 1980 and 2006 with a remotely sensed map of grouse moor management, to test whether breeding performance was lower in areas with active management for grouse shooting. Productivity of pairs on grouse moors was 50% lower than pairs breeding on non-grouse moor habitat. However, clutch size and brood size of successful nests did not differ between habitat types, suggesting that food constraints were unlikely to explain this difference. Population models suggested source-sink dynamics, with populations on grouse moors unable to sustain themselves without immigration. Population data confirmed that growth rates were indeed lower on grouse moors than on non-grouse moor sites. Analysis of wildlife crime data confirmed that persecution of the species was more frequent on grouse moors than in other habitat types. This population will be more secure, and better able to function as a barometer of environmental health and climate change, if illegal persecution of the species ceases on areas of land managed for grouse shooting.

Even more evidence then, yet again, that illegal persecution in the UK is so serious that it is having population-level impacts on several raptor species. I think we can be fairly sure that the game-shooting lobby will try to dismiss these latest findings, especially as the lead author was an RSPB scientist and his co-authors were members of the Northern England Raptor Forum. We await their response(s) with interest.

Full citation:

Amar et al. (2011). Linking nest histories, remotely sensed land use data and wildlife crime records to explore the impact of grouse moor management on peregrine falcon populations. Biological Conservation.

Link to on-line abstract here

RSPB press release on British Birds website here

RSPB’s Birdcrime 2010 report published

The RSPB has published its annual report on raptor persecution in the UK (Birdcrime 2010). Poisoning reports are down (128 reported in 2010; 153 reported in 2009). Birds confirmed poisoned in 2010 include:

20 red kites, 30 buzzards, 8 peregrines, 5 golden eagles, 2 goshawks, 1 sparrowhawk and 1 white-tailed eagle.

Meanwhile, the RSPB are using the publication as an opportunity to call for a crackdown on poisons, according to the BBC website. It says the current law, which makes it illegal to possess certain pesticides, is rendered ‘impotent’ because the list of controlled substances hasn’t been published in England, Wales and Northern Ireland.

We’ll write more about the Birdcrime 2010 report over the coming few days. BBC news article here. Birdcrime 2010 report here

 

Tip of the iceberg

Anyone who has been reading the ‘official’ annual raptor persecution reports over the last few decades will be familiar with the phrase, “These figures represent the tip of the iceberg”. Conservationists have long held the view that many illegal raptor persecution incidents go unreported, given the remote locations involved and the cultural and social pressures that inhibit certain sectors of the rural community from speaking up about these crimes. Most reports of poisoned, shot, or trapped raptors come from people who have found them by chance, for example hill walkers and dog walkers. The game shooting lobby, in response to the ‘tip of the iceberg’ statement, usually asks, “Where’s the evidence?” The numerous (and ever-increasing) glut of peer-reviewed scientific publications, that show a clear correlation between persecution and upland grouse moors, are usually dismissed as ‘pseudo-science’ by the landowners and gamekeepers, and the conservationists are often accused of conducting some sort of smear campaign against the game shooting industry.

No doubt we will hear all of this, and more, in the coming few days once the RSPB Birdcrime 2010 report has been published later this week. For certain, the report will contain the statement, “These figures represent the tip of the iceberg”, or words to that effect.

So, if the gamekeepers want evidence, here’s some that was unwittingly provided by….er, gamekeepers. It comes in the form of a recently (Sept 2011) published paper in the journal Scottish Birds, which is published by the Scottish Ornithologists’ Club. The paper was written by R.L. McMillan and is entitled, ‘Raptor persecution on a large Perthshire estate: a historical study’. Unfortunately we’re not allowed to publish the whole paper here (you have to be a member of the SOC to get access, or google the author and ask him for a PDF for your personal use) but here is the abstract:

The Atholl Game and Vermin Lists provide an almost continuous record from 1867 until 1988 and in many respects are unique for a large estate in Scotland. Large numbers of raptors and owls were destroyed by gamekeepers during the latter part of the 19th century and into the late 20th century. The implementation of legislation to protect predatory birds appears to have made little difference to persecution levels. Gamekeepers on individual beats seemed able to decide whether they killed predators or not. A few gamekeepers chose not to kill any birds of prey. Some persecution continued well into the late 20th century and a comparison between estate records and incidents recorded by the authorities strongly suggests that a substantial amount of illegal persecution was not recorded.

The paper provides a detailed insight into the extent of raptor persecution on Atholl Estate,  covering the historical period when it was legal to kill raptors (pre-1954), and the current period when it is illegal to kill raptors (1954 onwards). Gamekeepers on the nine beats at Atholl Estate were required to submit annual report cards that recorded the number of game and ‘vermin’ [including raptors!] that was killed on each beat. According to the paper, McMillan writes of Atholl Estate:

“To maintain the estate record of game and vermin killed, the individual shooting beats were required to complete a card by the end of February each year and this contained details from the preceding year. The same printed card had been in use for many years and this included hawks, owls and ravens. Although the estate factor regularly checked the returns on these cards, it was only when a member of staff expressed concern that protected birds were included in the returns, that a new form was introduced for the 1988/89 season which excluded protected species”.

The historical records covering part of the period (1867-1911) when it was legal to kill raptors don’t provide any surprises, showing that 11,428 ‘hawks’ were killed on Atholl Estate, in addition to 3,731 owls. Sadly the records do not distinguish between different species of ‘hawks’ or owls and McMillan has interpreted the term to include every raptor and owl species that would typically occur in the area.

The more recent records, however, are of far more interest. They show the period covering the introduction of the 1954 Protection of Birds Act (making it illegal to kill all raptors except sparrowhawks, which weren’t protected until 1961) and McMillan’s graphs of persecution incidents show that the legislation was ignored on the two beats whose records he analysed. In fact on one beat, McMillan shows that persecution actually increased at the time the Act was implemented.

But the most interesting part of this paper comes in Table 3. It is a comparison of gamekeeper records from just one Atholl Estate beat, with the ‘official’ RSPB data for the whole of Scotland, from the period 1980 – 1988. The RSPB data only include details of raptors that have been killed (so not details of ‘suspected’ incidents). Here’s an overview of McMillan’s findings:

1980/81: Atholl Estate beat = 19 raptors killed; RSPB official data for all of Scotland= 9 raptors killed.

1981/82: AE beat = 21; RSPB all Scotland= 23.

1982/83: AE beat = 36; RSPB all Scotland= 16.

1983/84: AE beat = 36; RSPB all Scotland  = 13.

1984/85: AE beat = 25; RSPB all Scotland= 12.

1985/86: AE beat = 22; RSPB all Scotland= 8.

1986/87: AE beat = 14; RSPB all Scotland= 13.

1987/88: AE beat = 30; RSPB all Scotland  = 15.

So, in each of the years listed, with the exception of 1981/82, the ‘official’ RSPB figures for the WHOLE of Scotland were lower than the number of illegally persecuted raptors on just one shooting beat. Does anyone need any clearer evidence that the ‘official’ statistics of illegal raptor persecution are just the tip of the iceberg?!! Of course, there are plenty of arguments that could be made about the reliability of the gamekeepers’ records – i.e. keepers could have inflated the number to earn a bonus, or alternatively keepers could have reduced the number for fear of providing potentially incriminating evidence. McMillan deals with these and other issues in the paper. And for those who think the persecution stopped when Atholl Estate stopped recording it in the 1988/89 season, McMillan reports that “between 1989 and 1999, a number of incidents were logged by the RSPB on several shooting beats on the Atholl Estates, not all of which were confirmed, but which included shootings of raptors, trapping of birds including golden eagle and the deliberate destruction of broods of hen harrier and peregrines“.

It’s worth bearing in mind that these figures in Table 3 are from just ONE beat on just ONE sporting estate. You don’t need much imagination to guess what these figures would look like if records from every sporting estate in Scotland were included in the analysis. This should provide some perspective when we read the ‘official’ figures in the RSPB Birdcrime 2010 report later this week.

It should be noted that under the current management, Atholl Estate regularly provides a home for breeding golden eagles, peregrines, hen harriers and other raptors.

Full paper citation: McMillan, R.L. (2011). Raptor persecution on a large Perthshire estate: a historical study. Scottish Birds 31(3): 195-205.

Atholl Estate website here

Thank you to the contributor who alerted us to this publication.

Another poisoned peregrine and the appeal for info comes three months later (again)

The BBC News website is running a story today about another poisoned peregrine. The young bird was apparently discovered three months ago at Whitecleaves Quarry near Buckfastleigh in Devon. The toxicology results, which have only just been released, indicate the bird was poisoned with the banned pesticides Carbofuran and Aldicarb.

This is the third reported poisoning incident in the region in recent weeks, following the reports of four poisoned goshawks and one buzzard in Devon (see here) and two poisoned peregrines in Cornwall (see here).

According to the BBC article, peregrines at Whitecleaves Quarry have been targeted before, with poisoned birds being discovered in 1992, 2004 and 2005.

Devon & Cornwall police are investigating the latest incident, and the RSPB has once again put up a £1,000 reward for information leading to a conviction.

The obvious question – why has it taken three months for this incident to be publicised?

BBC News article here

Poisoned buzzard & ravens – appeal for info comes three months later

A news item posted today on the RSPB website reveals that a buzzard and two ravens were found dead in Monmouthshire in July. Tests reveal they had been poisoned by the banned pesticide Carbofuran. Two dead pigeons were also found which had been laced with an un-named pesticide and the news report suggests these were put out as illegal poisoned bait. Last year, two dead peregrines, poisoned with Carbofuran, were found at the same site (see here).

The article reports that Gwent Police, the Welsh Government and the RSPB are appealing for information. The RSPB is reported to be offering a £1,000 reward for information leading to a conviction.

Three months after the incident? What’s the point? Why is it that media reports about wildlife crime, and particularly illegal raptor persecution incidents, are now consistently delayed for several months? What other areas of crime are reported this way? If my house was burgled in July and I waited for three months before I reported it to the police, what do you think the chances would be of catching the burglar? About the same as catching the raptor poisoners, I reckon.

Talking of delayed reports…why is it that the 2011 SASA poisoning report, which is supposed to be updated every quarter, has not been updated since March 2011? Are we to believe that raptors are no longer systematically poisoned in Scotland because none have been handed in for analysis for the last seven months? If anyone feels like doing a Freedom of Information Request, this would seem to be a good place to start (FoI on SASA website here).

News story about the poisoned buzzard & ravens on RSPB website here

Two peregrines confirmed poisoned in Cornwall

Devon & Cornwall Police, along with the RSPB, have just announced that two peregrines that were found dead on 21 July this year had been poisoned by the banned pesticide Carbofuran. The RSPB is offering a reward of £1000 for information leading to a conviction.

The two birds, a male and female, were discovered by a member of the public, having been seen alive a few hours earlier hunting along their cliffside nest in St. Just. Cornwall Police Wildlife Crime Officer, P.C. Jack Tarr said: “That these magnificent birds should be killed in this way is truly shocking. This was a pair I’d regularly enjoyed watching hunting off the coast at St. Just and I know they were popular with many other people who walked the cliffs there. We need to find out who did this and bring them to justice“.

Full story on RSPB website here

Article on BBC News here

Article in This is Devon here

Peregrine poisoning incidents not made public until 15 months later

An article published in the Scotsman last week reports on two peregrine poisoning incidents that took place in April and May 2010, that have only just been made public.

The birds were found dead at a quarry in the West Lothian town of Kirknewton, and both had been poisoned by the banned pesticide Aldicarb. The head of one of the peregrines had been severed and removed – possibly as a trophy.

The two incidents only came to light after the publication last week of the government’s 2010 poisoning report. Lothian & Borders police have not identified any suspects. Perhaps if they’d publicised the incidents at the time they occurred they may have got some leads.

Full story in the Scotsman here

Scotland’s shame: 2010 poisoning figures published

Today the Scottish government has published its latest report on animal poisoning in Scotland. The figures relate to recorded incidents in 2010 and demonstrate a sharp rise in the number of wildlife poisonings, including the widespread illegal poisoning of raptors. The report shows that 69% of all ‘abuse’ cases involved the poisoning of birds of prey, covering a wide area including Borders, Dumfries & Galloway, Highland, Lothian, Strathclyde and Tayside. The illegal pesticide Carbofuran was detected in half of these incidents. The raptors that tested positive for poisons included 40 buzzards, 4 golden eagles, 1 sea eagle, 1 kestrel, 5 barn owls, 2 tawny owls, 2 peregrines, 21 red kites and 11 sparrowhawks.

Unsurprisingly, some are trying to play down the appalling statistics. The Scottish Land and Estates Chairman, Luke Borwick, is reported to have said that the organisation is working hard to reduce such incidents “…and there is evidence these joint efforts are beginning to pay off“. He was referring to what he called a “significant decrease” (in illegal raptor poisonings) in the first half of 2011. The Environment Minister Stewart Stevenson also made the same comment. Unfortunately, we are not able to make the assessment for ourselves because the published government figures for 2011 only cover the period January to March 2011. However, the figures for this three-month period tell a very different story to the one that Luke and Stewart are pushing: they include 3 buzzards, 1 golden eagle, 1 red kite and 2 peregrines all illegally poisoned in the first three months of 2011 (see here for earlier report). Hmmm.

There are other reactions from various bodies, including the RSPB, the Police and the Scottish Environment Minister – these can be read on the BBC website here and the Scottish government website here.

To read the depressing SASA government report with all the gory details, click here.