Alpine accentor Alpine accentor The alpine accentor ("Prunella collaris") is a small passerine bird. The word "accentor" is from post-classical Latin and means a person who sings with another. The genus name "Prunella" is from the German "Braunelle", "dunnock", a diminutive of "braun", "brown", and the specific "collaris" is from Latin "collum", "neck". This species, along with the Altai accentor is sometimes separated from the other accentors, into the genus "Laiscopus". This is a robin-sized bird at 15-17.5 cm in length, slightly larger than its relative, the dunnock. It has a streaked brown back, somewhat resembling a house sparrow, but adults have
Bird nest called caliology. Bird nests are also built by humans to help in the conservation of certain birds (such as swallows). Swallow nests are generally built with plaster, wood, terracotta or stucco. Artificial nests, such as nest boxes, are an important conservation tool for many species, however nest box programmes rarely compare their effectiveness with individuals not using nest boxes. Red-footed falcons using nest boxes in heavily managed landscapes produced fewer fledglings than those nesting in natural nests, but also than pairs nesting in nest boxes in more natural habitats. Bird nest A bird nest is the spot in which a