Clutch size and breeding success was related to nest-box size in 215 nests of Tengmalm's owl in the Kauhava region, western Finland in 1966-82. In vole peak years, but not in other years, mean clutch ...
Contrary to expectations, the size of the Blue Tits' nests is unrelated to their breeding success. The researchers behind a forthcoming study in The Auk: Ornithological Advances spent 18 years making ...
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