The spotted nutcracker, Eurasian nutcracker, or just nutcracker, (Nucifraga caryocatactes) is a passerine bird slightly larger than the Eurasian jay. BirdForum is the net's largest birding community, dedicated to wild birds and birding, and is absolutely FREE! You are most welcome to register for an account, which allows you to take part in lively discussions in the forum, post your pictures in the gallery and more. [edit] Diet They eat seeds from various species of white pines (notably Pinus cembra, P. peuce in Europe, P. armandii, P. pumila, P. sibirica, P. wallichiana in Asia). To a smaller extent they also eat spruce Picea seeds and hazel Corylus nuts; these latter are important in northern Europe where white pines do not occur naturally. Their diet also includes birds eggs,nestlings and insects including bee and wasp grubs. Stores large quantities of nuts (up to 100,000 per bird) in its winter territory, using its exceptional spatial memory to retrieve the seeds up to 8-10 months later and even from under deep winter snow cover. Caches them often at the base of a tree, behind moss on rocks, crevices in a tree bark or simply on the ground near a rock or a small sapling. As they usually cache more than they need, the surplus seed is able to germinate; in consequence this bird plays a fundamental role in the dispersal of several white pine species.[3] Eurasian Nutcracker Free and friendly birdwatching community - with forum, gallery, blogs and reviews. Chat with other birders around the world, post and view.![]() Eurasian nutcracker (Nucifraga caryocatactes). Plate 164 from 'Watercolour drawings of British Animals' (1831-1841) by Scottish naturalist William MacGillivray. The nutcracker is either of two sharp-billed, short-tailed birds belonging to the family Corvidae; order Passeriformes; found in coniferous forests; the Eurasian. ![]() ![]() ![]() Either of two sharp-billed, short-tailed birds belonging to the family Corvidae (order Passeriformes), found in coniferous forests. The Eurasian nutcracker (Nucifraga.
0 Комментарии
Оставить ответ. |
АвторНапишите что-нибудь о себе. Не надо ничего особенного, просто общие данные. Архивы
Март 2019
Категории |