Birds egg, common cuckoo, Cuculus canorus Ssp canorus Linnaeus, 1758, cuckoo egg found with 3 foster parent eggs in British Eurasian bullfinch nest, Pyrrhula pyrrhula Ssp pileata W MacGillivray, 1837, at Fyfield, Hampshire, 1959

Birds egg, common cuckoo, Cuculus canorus Ssp canorus Linnaeus, 1758, cuckoo egg found with 3 foster parent eggs in British Eurasian bullfinch nest, Pyrrhula pyrrhula Ssp pileata W MacGillivray, 1837, at Fyfield, Hampshire, 1959
Birds egg, common cuckoo, Cuculus canorus Ssp canorus Linnaeus, 1758, cuckoo egg found with 3 foster parent eggs in British Eurasian bullfinch nest, Pyrrhula pyrrhula Ssp pileata W MacGillivray, 1837, at Fyfield, Hampshire, 1959