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Showing posts from July, 2014

Book Reviews: Fighting For Birds - 25 Years in Nature Conservation by Mark Avery

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       Paperback /  325 Pages /  Pelagic Publishing (2012) /  ISBN 978-1907807299 /  RRP £12.99 Review #1 by Mike Everett for British Birds Quite early in chapter one, reading about Mark Avery’s time as a deer researcher on Rum, I came across the bizarre statement that ‘our base… looked across Mull to Skye and the Cuillins…’ and wondered whether this boded well for the rest of the book. I need not have worried; it must have been an editorial mistake. This is a marvellous account of one man’s work for bird conservation, reflecting Mark’s impressive birding and academic background as well as his sharp intellect, his sure grasp of strategy and his huge commitment to his vocation. His well-known sense of humour is there too, as is that enviable facility at communication which made him such a great asset to the RSPB.

Revealed: The Mystery Behind Starling Flocks (ScienceDaily)

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Murmuration of Starlings by Walter Baxter The mystery behind the movements of flocking starlings could be explained by the areas of light and dark created as they fly, new research suggests. The research found that flocking starlings aim to maintain an optimum density at which they can gather data on their surroundings. This occurs when they can see light through the flock at many angles, a state known as marginal opacity. The subsequent pattern of light and dark, formed as the birds attempt to achieve the necessary density, is what provides vital information to individual birds within the flock.

ID - Collared, Oriental, or Black-winged Pratincole? A comparison

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( Collared ) Pratincole in flight by Daniel Pettersson Is it a Collared, Oriental, or Black-winged Pratincole? How about a Cream-coloured Courser? Use these pages, containing the most useful online info in one place, to compare features, habits & calls, & identify that Swallow-plover... Collared Pratincole (Glareola pratincola) Oriental Pratincole (Glareola maldivarum) Black-winged Pratincole (Glareola nordmanni) Cream-coloured Courser (Cursorius cursor)

Golden Eagles in Southern Scotland: The Facts & the Fiction (Raptor Persecution Scotland)

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A new report has been published today detailing the recovery prospects for golden eagles in southern Scotland. The SNH-commissioned report has been written by two undisputed experts (Alan Fielding and Paul Haworth), both of whom were involved with the impressive Golden Eagle Conservation Framework report that was published in 2008. The report has only just been made available on SNH’s website so we’ve not had a chance to thoroughly digest its findings – although we intend to come back to it in due course. Having skimmed through it, it looks like a very detailed analysis of the various issues that could affect the recovery of this tiny population (see  here  for a previous blog entry on the perilous state of the golden eagle population in southern Scotland), including, of course, the effect of illegal persecution. This photo below shows the graphic effect of persecution on golden eagles in south Scotland – this one was found shot and critically injured on a driven grouse...

Summer Yellow-legged Gulls (BirdGuides)

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It's unbelievable to think that, just a couple of decades ago,  Yellow-legged Gull  ( Larus michahellis ) was, for many, an irrelevant yellow-legged 'form' of our familiar  Herring Gull  encountered only while on holiday in the Mediterranean. Following its elevation to full specific status and the popularity of gull-watching dramatically increasing throughout the 2000s, the prominence of Yellow-legged Gull as a British bird has risen greatly to where it is today. Yellow-legged Gull is a regular non-breeding visitor across the bulk of England, with notable exceptions being the far north and northwest — Yorkshire is about as far north as the species is regularly seen, and it is particularly rare on the west coast north of Cheshire. It is rather scarce and localised in its appearance in Wales, while it remains a genuinely rare species in Scotland. Its strongholds in England are across the Midlands, East Anglia and the South-East, where it may appear in considerable ...

Spring conditions in the Mediterranean affect migrants breeding in the UK (BTO)

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Wood Warbler (BTO) Migrant birds are likely to be particularly vulnerable to climate change because they can be affected by changing conditions on the breeding grounds, wintering grounds or passage areas in between. Many  long distance migrants that breed in the UK and winter in Africa are in severe decline , and previous BTO work has shown this can be related to  changing conditions in Africa , which affect overwinter survival, as well as to  conditions on British breeding grounds . BTO research published last year showed that although  conditions in Africa can ‘carry-over’  and affect the timing of nesting in this country, the most important factor influencing breeding was spring temperature in the UK. A new study by the BTO and the  University of Sheffield  builds upon the work by considering the impacts of climatic variation in passage regions, as well as the breeding and non-breeding grounds. It focuses on three declining migratory s...

New Rural Development Plan offers a lifeline for Irish farmland birds (BirdWatch Ireland / BirdGuides)

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BirdWatch Ireland has warmly welcomed the recent announcement by Minister for Agriculture, Marine and Food Simon Coveney that farmers undertaking actions to conserve critically-threatened farmland birds will get priority access to substantial funding within Ireland's new Rural Development Programme. If properly implemented, this offers hope of halting declines and restoring bird populations in parts of their range. Ireland's biodiversity is facing very severe threats, as evidenced by declining populations of many farmland birds and losses in extent and quality of many semi-natural habitats in the mosaic of Ireland's farmed landscapes. There has been extensive research in the UK, in particular, which has related farmland bird declines to changes in agricultural practices since the 1970s. Specific causes for these changes included a variety of farming practices, including increased use of pesticides and fertilisers, increased mechanisation and losses of hedgerow extent an...

High neonicotinoid concentrations responsible for bird declines (BirdGuides)

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Following the recent revelation in a review of systematic pesticides that neonicotinoids are  causing significant damage to invertebrate species and their populations  a new study, published in the science journal Nature  has revealed that the pesticides are also having a significant negative impact on bird species. Researchers in The Netherlands measured the effect of widespread use of a popular neonicotinoid, imidacloprid, discovering that when the chemical was highly concentrated in surface water supplies, local bird populations showed a significant decline. Birds most affected in the sites sampled included  Starling ,  Tree Sparrow  and  Swallow . These declines were able to be tied in with the introduction of imidacloprid in the country in the mid-1990s, even when allowing for the effects of changing agricultural methods such as the intensification of farming. Tree Sparrow  reproductivity relies on the abundance of insect life, on wh...

Bowland hen harrier chicks tagged (RSPB)

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Juvenile Hen Harrier by Jude Lane Hen harrier chicks have been fitted with high-tech satellite tags as part of a new RSPB initiative to help conserve England’s most threatened bird of prey. The chicks, which are approximately four weeks old, are currently being raised in a nest on the United Utilities Bowland Estate. The site is traditionally the stronghold for the English hen harrier and the RSPB has worked with the water company and its shooting tenants to protect the birds there for more than 30 years. The hen harrier nest is the first successful one in England since 2012 and one of only three in the whole of England this year. Chicks produced in the other English nests – one of which is also on the United Utilities Bowland Estate –will also be fitted with satellite tags when they are large enough. The satellite tags were supplied by Natural England and fitted by Stephen Murphy, the Agency’s lead adviser for hen harriers. He said:  “The lightweight satellite tags...

Birds and Climate Change - A global review of the impact of climate change on birds (RSPB)

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Kittiwake by   Grahame Madge Birds and Climate Change, a new book released today (July 1, 2014), shows that recent climate change has already had a significant impact on bird populations around the world. These impacts are projected to become much larger in the future, increasing the extinction risk for many species. However, the book gives reasons for cautious optimism. We have a window of opportunity to reduce the threat that climate change poses if action is taken now. To address this, we need to reduce the future amount of climate change. Increased use of renewable energy can help, although if not deployed carefully, it can also cause unintended but significant problems to many bird species. The other type of action is to adapt existing approaches used to counter threats to bird populations so that they also deal effectively with climate change.