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Fig. 1 | Avian Research

Fig. 1

From: Russet Sparrows spot alien chicks from their nests

Fig. 1

Chick rejection behavior in Russet Sparrows. a Russet Sparrow nest with two bunting chicks (indicated by black arrows) and 2 Russet Sparrow chicks (between the two bunting chicks). b Russet Sparrow parents returned to the nest and started to hold a bunting chick in its beak. c Russet Sparrow parents ejected the bunting chick

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