Lack of fine-tuned egg rejection adjustment in barn swallows with variable local abundance of common cuckoos.
Behavioural Processes(2020)
摘要
•Egg rejection rates of barn swallows were tested in reed and town habitats in China.•Brood parasitic common cuckoos occurred in higher abundance in the reed than town.•No natural cuckoo parasitism was observed in both habitats in barn swallow nests.•Similarly low egg rejection rates of experimental eggs were found in both habitats.•An increased abundance of cuckoos did not increase antiparasite defence in swallows.
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关键词
Brood parasitism,Coevolution,Egg rejection,Common cuckoo,Metapopulation
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