Interspecific adoption is an intriguing topic in behavioral and evolutionary ecology. As it is a rare phenomenon, seldom documented in the literature, reports of interspecific adoption based on solid data are particularly valuable. A long-term and extensive monitoring programme involving a local population of European blackbirds (, hereafter blackbird) has yielded, among other things, observations of alloparental behavior exhibited by blackbirds toward fieldfare () nestlings (a single nest, the first-ever record) and fledglings (12 cases in all). We discuss the observations in the context of the available literature.
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| http://dx.doi.org/10.1002/ece3.10169 | DOI Listing |
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Adoption and feeding of fieldfare nestlings and fledglings by European blackbird.
Ecol Evol
June 2023
Department of Vertebrate Ecology and Zoology, Faculty of Biology University of Gdańsk Gdańsk Poland.
Interspecific adoption is an intriguing topic in behavioral and evolutionary ecology. As it is a rare phenomenon, seldom documented in the literature, reports of interspecific adoption based on solid data are particularly valuable. A long-term and extensive monitoring programme involving a local population of European blackbirds (, hereafter blackbird) has yielded, among other things, observations of alloparental behavior exhibited by blackbirds toward fieldfare () nestlings (a single nest, the first-ever record) and fledglings (12 cases in all).
View Article and Find Full Text PDFClutch size variation in passerine birds: The nest predation hypothesis.
Oecologia
August 1982
University of Trondheim, the Museum, Erling Skakkesgt. 47A, N-7000, Trondheim, Norway.
The hypothesis that a negative relationship exists between clutch size and the probability that the nest will be robbed is tested, using data for passerine birds given in the literature. The data for four separate groups of species, viz. hole-nesters, semi hole-nesters and open-nesters nesting above and on the ground, respectively, were examined in relation to geographical gradients and seasonal and annual variation.
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