Birds egg, common cuckoo, Cuculus canorus Ssp canorus Linnaeus, 1758, cuckoo egg found with 3 foster parent eggs in linnets nest, Carduelis cannabina (Linnaeus, 1758), at Great Parndon, Essex, England, 1944

Birds egg, common cuckoo, Cuculus canorus Ssp canorus Linnaeus, 1758, cuckoo egg found with 3 foster parent eggs in linnets nest, Carduelis cannabina (Linnaeus, 1758), at Great Parndon, Essex, England, 1944
Birds egg, common cuckoo, Cuculus canorus Ssp canorus Linnaeus, 1758, cuckoo egg found with 3 foster parent eggs in linnets nest, Carduelis cannabina (Linnaeus, 1758), at Great Parndon, Essex, England, 1944