Birds egg, common cuckoo, Cuculus canorus Ssp canorus Linnaeus, 1758, cuckoo egg found with 4 foster parent eggs in European robins nest, Erithacus rubecula (Linnaeus, 1758), at Witley, Surrey, England, 1931

Birds egg, common cuckoo, Cuculus canorus Ssp canorus Linnaeus, 1758, cuckoo egg found with 4 foster parent eggs in European robins nest, Erithacus rubecula (Linnaeus, 1758), at Witley, Surrey, England, 1931
Birds egg, common cuckoo, Cuculus canorus Ssp canorus Linnaeus, 1758, cuckoo egg found with 4 foster parent eggs in European robins nest, Erithacus rubecula (Linnaeus, 1758), at Witley, Surrey, England, 1931