British Birds April 2019

British Birds April cover

British Birds April 2019

Redstart hybrids in Europe and North Africa An analysis of wild Black Redstart x Common Redstart hybrids from Europe and North Africa is presented, with an overview of distribution, phenology, habitat, biometrics, phenotypes and vocalisations. Primary spacing ratio and the presence of emarginations on P6 are useful identification features for hybrids, but there is substantial overlap with both parental species, and with Eastern Black Redstart.

Red-winged Blackbird in Orkney: new to Britain A female Red-winged Blackbird was discovered on North Ronaldsay, Orkney, on 29th April 2017. It remained until 14th May and was added to Category A of the British List.

Seabird recovery on Lundy: population change in Manx Shearwaters and other seabirds in response to the eradication of rats Lundy once supported large numbers of breeding seabirds, but declines during the twentieth century left the island with only remnants of its former colonies. This paper examines the results from the latest Manx Shearwater survey and how the species has responded since rats were eradicated from the island, in 2003–04.

Wheatears on Lundy: the impact of rat eradication Data on the breeding population of Northern Wheatears on Lundy are presented. The results suggest a marked increase in breeding Wheatears since the successful rat eradication project on the island.

BB eye  Why birders should be safe and sound

My patch  Thetford

News & comment and Recent reports complete the April issue.

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The post <i>British Birds</i> April 2019 appeared first on British Birds.

Source: Bird Watching

Author: Roger Riddington