Great spotted cuckoo fledglings often receive feedings from other magpie adults than their foster parents: which magpies accept to feed foreign cuckoo fledglings?

Although the number of territories in which non-parental feedings were observed was low, probably causing only marginally significant results, these observations do suggest that adults that do provide non-parental feedings do this frequently and, from the fledglings' perspective, that non-parental feedings involve an important source of energy for these fledglings.

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