Hybrid Great Tit x Blue Tit

01 April 2021
Comments Notes On 2nd February 2019, CE was mist-netting at a garden feeder near Hexham, in Northumberland, at a site where he has trapped in excess of 20,000 Great Tits Parus major and Blue Tits Cyanistes caeruleus (approximate ratio 1:2) since 1985. A...
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Notes

01 January 1983
Comments Notes Use by seabirds of human fishing activities. Jeffery Boswall (Brit. Birds 70: 79-81) commented that little has been published on the use made by seabirds of human fishing activities. A main factor adduced by the late James Fisher (1952, The Fulmar) to ...
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