STEL H & HELLEBREKERS WPJ (1959) Short announcements: young common Cuckoo Cuculus canorus in nest of a Barn Swallow Hirundo rustica. LIMOSA 32 (4): 224-226.
Common Cuckoo Cuculus canorus Barn Swallow Hirundo rustica young common Cuckoo Cuculus canorus in nest of a Barn Swallow Hirundo rustica
