Copy
View this email in your browser

IBIS  |  Volume 158  |  Issue 3  |  July 2016

The latest issue of IBIS features 16 full papers and one short communication. It also contains citations for Chris Perrins on his award of the Union Medal and Tim Birkhead on his award of the Godman-Salvin Prize, plus our usual extensive book review section.

>> VIEW ALL PAPERS IN THIS ISSUE

Here are just a few of the many highlights.

Survival of Afro-Palaearctic passerine migrants in western Europe and the impacts of seasonal weather variables 
Alison Johnston, Robert A. Robinson, Gabriel Gargallo, Romain Julliard, Henk van der Jeugd & Stephen R. Baillie
The widespread declines in the populations of Afro-Palaearctic migrant songbirds is one of the most pressing issues in European bird conservation today, yet the reasons for these declines remain very unclear. It is not even clear whether the problems lie on the breeding grounds in Europe, on the wintering grounds in Africa or somewhere along the migration routes in between. Using data from constant-effort ringing schemes, Alison Johnston of the British Trust for Ornithology and her colleagues assess the relationship between survival rates, population trends and weather. They find that species wintering in humid areas of western Africa have had significantly higher annual survival probabilities than species wintering in the arid the Sahel. Rainfall in the Sahel was positively correlated with survival in at least some populations of five species. Importantly, the authors were able to demonstrate a link between annual survival and population trend, suggesting that although the precise mechanism of these declines remain elusive, they appear to act more on survival than on productivity. This is an important step forward in identifying the “smoking gun” that is causing migrant populations to fall across Europe.

>> VIEW ABSTRACT


Temperate migrants and resident bird species in Afro-tropical savannahs show similar levels of ecological generalism
Sam T. Ivande & Will Cresswell 
Staying on the subject of declining Afro-Palaearctic migrant birds, Sam Ivande and Will Cresswell, both of St Andrews University and the A.P. Leventis Ornithological Research Institute (APLORI) in Nigeria, approach the problem from a different angle by assessing the likely vulnerability of wintering migrants to habitat change or loss relative to resident African species. They argue that if Afro-Palaearctic migrant birds wintering in Africa are highly habitat specific, their declines might more easily be explained by anthropogenic changes in the environment, whereas if they are able to exploit a broad range of habitats, they are better able to withstand such changes, in which case other factors are more likely to be driving their declines. By looking at how species occur over a range of habitat gradients, the authors show that wintering migrants are no more specialised or generalised than are ecologically and taxonomically similar resident African species. This suggests that wintering migrants are unlikely to be limited by the availability of, or changes in, specific habitat types in their African wintering areas and so should be fairly robust to habitat change. Taken together, this and the previous paper suggest that researchers may need to look in more detail at survival and habitat use along the migration routes of these declining species.

>> VIEW ABSTRACT


The phylogenetic relationships of Przevalski's Finch Urocynchramus pylzowi, the most ancient Tibetan endemic passerine known to date
Martin Päkert, Jochen Martens, Yue-Hua Sun & Patrick Strutzenberger 
Przevalski’s Finch has puzzled taxonomists for many years, as its plethora of alternative names (Pink-tailed Bunting, Pink-tailed Rosefinch) attests. Superficially like a rosefinch, the species has a range of vocalisations and egg colouration unlike any similar species, but it has traditionally been placed with the Old World buntings (Emberizidae) or with the carduelline finches (Fringillidae, Carduelinae). Now Martin Päkert of the Senckenberg Natural History Collections in Dresden and colleagues present the most detailed genetic analysis of this strange species yet undertaken. Their results suggest that traditional placements were wrong, and that far from being a bunting or a carduelline finch, U. pylzowi is actually part of the clade formed by weavers and waxbills. Within this clade, it appears closest to the ploceid weavers, but is still sufficiently different in a number of ways to be treated as a separate group within this clade. Remarkably, it appears to have diverged from its nearest ancestors as much as 25 million years ago, making this the most ancient songbird yet recorded from the Tibetan region.

>> VIEW ABSTRACT


Negative impact of wind energy development on a breeding shorebird assessed with a BACI study design
Alex Sansom, James W. Pearce-Higgins & David J. T. Douglas
The proliferation of alternative energy production has raised fears that, despite the reduction in greenhouse gasses, infrastructure such as wind turbines can have direct and indirect negative impacts on birds and other wildlife. However, most assessments of the environmental impacts of wind farms are hampered by a lack of comparative data. The RSPB’s Alex Sansom and her colleagues present one of the first fully controlled ‘before-after-control-intervention’ (BACI) studies of the impacts of wind farms and birds, comparing densities of Golden Plovers Pluvialis apricaria before, during and after wind farm construction, both at the wind farm and at a control site. They find that while Golden Plover densities were unaffected by the construction of the wind farm, they were very significantly lower once the farm began to operate, with a decline of nearly 80% in density and a displacement of birds by up to 400 metres. As no comparable changes were observed in the buffer or control zones, the authors conclude that the observed declines are a direct, and probably behavioural, response to the presence of the turbines. However, breeding success was unaffected. This has considerable implication for the future placement of wind farms. 

>> VIEW ABSTRACT
 

  • Book reviews > View
  • Issue contents > View
  • All issues View
xxx
DATABASE OF ORNITHOLOGICAL INSTITUTES
We recently announced this new initiative to produce a database of ornithological institutes around the world. If you haven't already added your home institute, then please do so. Thank you. 

> Further info
BOU CONFERENCES
#BOUsci16 

Advances in avian tracking methods

Peterborough, 12 Oct 2016

> Further info
#BOU2017

From avian tracking to population processes

Warwick, 28 - 30 Mar 2017

> Further info
Recent posts from #theBOUblog

We publish new blog posts most Mondays. Here are some of our recent posts illustrating the diversity of topics in #theBOUblog.

Tracking Black-headed Grosbeak through the annual cycle
Rodney Seigel
View

The value of volunteering
Steve Dudley
View

The riddle of elevation for tropical birds
Benjamin Freeman
View

What do Galapagos Hawks eat after the goats are gone?
Macricruz Jaramillo
View

Bird whereabouts reveal key habitat attributes
Vitek Jirinec, Robert E. Isdell & Matthias Leu
View

Climate and the wanderings of a colourful marshbird
Andrew Farnworth
View

Seed dispersal by scatter-hoarding corvids
Mario B. Pesendorfer
View


Writing for #theBOUblog

We are always looking for new and interesting blogs.
If you've published a paper recently, or have one due out, in any journal, then
promote it here. We'll also push it on social media for you!

Our blog is very popular and we are usually working on a month waiting time to publish posts. So get in touch with us early! 


More details
THE IBIS APP

For iPhone and iPad.
Android version is currently in development.

More details
Copyright © 2016 BOU, All rights reserved.


unsubscribe from this list    update subscription preferences 



Griffon Vulture image Â© מינוזיג | via Wikimedia Commons | CC-Zero
Black-tailed Godwit image Â© Andreas Trepte | via Wikimedia Commons | CC BY-SA 2.5