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Cassowaries have three-toed feet with sharp claws. The inner (first) toe has a dagger-like claw that may be 125 mm (5 in) long. [18] This claw is particularly fearsome, since cassowaries sometimes kick humans and other animals with their powerful legs. Cassowaries can run at up to 50 km/h (30 mph) through the dense forest and can jump up to 1.5 ...
The sanderling is the only sandpiper having 3 toes (tridactyl foot). [3] Lobate: the anterior digits (2–4) are edged with lobes of skin. Lobes expand or contract when a bird swims. In grebes, coots, phalaropes, finfoots and some palmate-footed ducks on the hallux (1). Grebes have more webbing between the toes than coots and phalaropes. [20 ...
Their feet have only three toes and a similarly reduced number of bones and associated foot muscles; ... [75] [76] Emus are large, powerful birds, ...
This bird is normally a permanent resident, but northern birds may move south and birds at high elevations may move to lower levels in winter. Three-toed woodpeckers forage on conifers in search of wood-boring beetle larvae or other insects. They may also eat fruit and tree sap.
A large pelican can attain a wingspan of 3.6 m (12 ft), second only to the great albatrosses among all living birds. [ 122 ] The largest of the cormorants is the flightless cormorant of the Galapagos Islands ( Nannopterum harrisi ), at up to 5 kg (11 lb) and 1 m (3.3 ft), although large races in the great cormorant ( Phalacrocorax carbo ) can ...
Their wings are large for a flightless bird (250 cm (8.2 ft)) [13] and are spread while running, to act like sails. [15] Unlike most birds, rheas have only three toes. Their tarsus has 18 to 22 horizontal plates on the front of it. They also store urine separately in an expansion of the cloaca. [13]
Grebes are small to medium-large freshwater diving birds. They have lobed toes and are excellent swimmers and divers. However, they have their feet placed far back on the body, making them quite ungainly on land. Five species have been recorded in Chile. White-tufted grebe, Rollandia rolland; Pied-billed grebe, Podilymbus podiceps
Zygodactyly (from Greek ζυγος, even-numbered) is an arrangement of digits in birds and chameleons, with two toes facing forward (digits 2 and 3) and two back (digits 1 and 4). This arrangement is most common in arboreal species, particularly those that climb tree trunks or clamber through foliage.