Four parents – a pair of common redstarts (top) and a pair of black redstarts (bottom) – attending the shared nest Giacomo Bruni
Two species of bird have been observed brooding in the same nest and raising offspring together.
Such cooperative breeding between different species has never been documented before, says Rosario Balestrieri at the Stazione Zoologica Anton Dohrn of Naples, Italy. “It is a very strange and rare situation, in which the brood is mixed between the two species,” he says.
The nest-sharing parents were a pair of common redstarts (Phoenicurus phoenicurus) and…
