This is common in songbirds and other perching birds, as well as hunting birds like eagles, hawks, and falcons.
In birds with anisodactyl or heterodactyl feet, the hallux is opposed or directed backwards and allows for grasping and perching.
The slaty-winged foliage-gleaner ("Philydor fuscipenne") is a perching bird species in the ovenbird family (Furnariidae).
The montane woodcreeper ("Lepidocolaptes lacrymiger") is a perching bird species in the subfamily Dendrocolaptinae of the ovenbird family (Furnariidae).
The two member of this genus are elongated, upright-perching flycatchers that share similar tail patterns. They are found at high-altitudes.
While the "Epidendrosaurus" specimen does not preserve a reversed hallux, the backward-facing toe seen in modern perching birds, its foot was very similar in construction to more primitive perching birds like "Cathayornis" and "Longipteryx".
Males begin their mating calls by perching above ground level.
Unlike other cormorants, this bird can often be seen perching on wires.
Sometimes known as perching birds, passerines are distinguished from other orders of birds by the arrangement of their toes (three pointing forward and one back), which facilitates perching.
Passeriformes is the taxonomic order to which the perching birds belong.
Males showed increased wing buzzing during each perching session on a tree when they were more active during the day and when ambient temperature was higher.
Later, it was assigned to the "perching ducks", a paraphyletic assemblage of waterfowl most of which are intermediate between dabbling ducks and shelducks.
Adults have been found perching on leaves of ferns and herbs in coniferous woods during daytime.
Long toes of equal length and large curved claws suggest adaptability for perching.
Unlike modern tinamous, at least "Lithornis" has toe claws and reversed halluxes that allow for efficient perching.
Puerto Rican todies are rarely seen on the ground; they usually prefer perching, unless when nesting.
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