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In biology, dactyly is the arrangement of digits (fingers and toes) on the hands, feet, or sometimes wings of a tetrapod animal. The term is derived from...

species. Sometimes known as perching birds, passerines generally have an anisodactyl arrangement of their toes (three pointing forward and one back), which...

five-toed schema from fish fins via amphibian ancestors. In birds with anisodactyl or heterodactyl feet, the hallux is opposed or directed backwards and...

disarm or incapacitate them. In the past, Coraciiformes encompassed all anisodactyl (including syndactyl) members of the Cavitaves. This means that the birds...

measurements including claw marks. Toes are arranged in the classic, anisodactyl pattern. The feet are flat, relatively weak, and poorly adapted to grasping;...

World vultures, ducks, geese) Typical toe arrangements in birds are: Anisodactyl: three toes in front (2, 3, 4), and one in back (1); in nearly all songbirds...

Tawny frogmouths and owls both have mottled patterns, wide eyes and anisodactyl feet. However, owls are birds of prey who possess strong legs, powerful...

distributing their weight across a large surface area. They have an anisodactyl toe arrangement that also helps them to cling to plant stems. Adults...

others, all living songbirds. Passerine birds are distinguished by an anisodactyl foot, but it is thought that their earliest ancestors may have been zygodactyl...

girdle. Birds' feet are classified as anisodactyl, zygodactyl, heterodactyl, syndactyl or pamprodactyl. Anisodactyl is the most common arrangement of digits...

wings are short and rounded for short-distance flight. Galliforms are anisodactyl like passerines, but some of the adult males grow spurs that point backwards...

mammals. A trait of artamids (and all passerines) is that they possess an anisodactyl foot arrangement: three toes are directed forward and one toe directed...

weebill are grey, and like all passerines, their toe arrangement is anisodactyl for perching. Juveniles have a similar plumage to adults, but can be...

very short toes that are tipped with sharp, curved claws. The toes are anisodactyl—three forward, one back—like those of most birds, but the chimney swift...

specialised for cavity nesting, depending on holes in trees for nests. The anisodactyl passerines construct much more varied nests and do not depend on such...

due to their different types of foot structure, peregrine falcons have anisodactyl talons (three toes in the front and one in the back) while parrotlets...

long, slender tail with rounded feathers. As a perching bird it has an anisodactyl toe arrangement with three toes facing forward and one back. It has a...

longer and more slender than in Scaniacypselus. The feet are described as anisodactyl, meaning that three toes face forward while one faces back. The proximal...

Middle Eocene of Messel, Hesse, Germany. It is described as a wren-sized anisodactyl bird with a long, slender bill and strong hallux. Its species name tessellatus...

red, and the throat contains brushes of white. The legs are gray and anisodactyl. Both males and females of this species share a similar look with the...