Climate change vulnerability assessment of species

Assessing species' vulnerability to climate change is a prerequisite for developing effective strategies to conserve them. The last three decades have seen exponential growth in the number of studies evaluating how, how much, why, when, and where species will be impacted by climate change. We provide an overview of the rapidly developing field of climate change vulnerability assessment (CCVA) and describe key concepts, terms, steps and considerations.

Spatio-temporal dynamics and aetiology of proliferative leg skin lesions in wild British finches

Leg lesions, more commonly known as ‘scaly leg’ or ‘tassel foot’ are growths on the legs of feet of finches. A study from the Zoological Society of London in collaboration with BTO, the Complutense University of Madrid and Linnaeus University, explores the causes, seasonality and distribution of one of the most notable diseases in wild birds in Britain.Leg lesions are one of the most commonly seen signs of ill health in British birds. Results from post-mortems on over a thousand finches have found that these leg lesions have two causes; a virus (Fringilla coelebs papillomavirus) and mites (Cnemidocoptes). The most frequently affected birds are Chaffinches but leg lesions have also been documented in other finch species.Weekly reports from BTO Garden BirdWatchers, as well as ad hoc sightings of disease from members of the public to Garden Wildlife Health, show that leg lesions in finches are widespread across the UK. However, reports of leg lesions increase during the winter period between November- March, at a time when we see an influx of Chaffinches from the continent, joining our breeding birds. The increase in migratory finches at this time might help to explain the increase in disease reporting rate in the winter months.We know that leg lesions, whilst distressing to see, often do not impede the birds and most of the time they behave normally, but in severe cases birds can become lame and will be increasingly vulnerable to predation. Currently there is no evidence that leg lesions pose a threat to conservation of wild finches. You can help reduce the spread of the disease in your garden by following good hygiene measures when feeding garden birds, such as regularly cleaning your feeders.  For more information on how to prevent disease and to report disease in your garden see the Garden Wildlife Health website.

Evaluating the effectiveness of conservation measures for European grassland‐breeding waders

Whether it is the swooping display and ‘pee-wit’ calls of a breeding Lapwing or the haunting cry of a Curlew over a tall hay meadow, breeding waders deliver some of the most iconic sights and sounds of the British countryside in spring. But, along with many of the other species breeding in agricultural habitats, all is not well with these charismatic birds, as BTO Research Ecologist Sam Franks reveals.

WeBS News - Issue 34

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Spatial scales of marine conservation management for breeding seabirds