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Penguins are notable for being the only birds (as well as animals in general) with both webbed feet and flippers (they have 2 each). The webbed or palmated feet of birds can be categorized into several types: Palmate: only the anterior digits (2–4) are joined by webbing.
Most birds have four toes, typically three facing forward and one pointing backward. [7] [10] [8] In a typical perching bird, they consist respectively of 3, 4, 5 and 2 phalanges. [2] Some birds, like the sanderling, have only the forward-facing toes; these are called tridactyl feet while the ostrich have only two toes (didactyl feet).
This is a list of the bird species recorded in Singapore.The avifauna of Singapore include a total of 450 species, 35 of which have been introduced by humans. [1]This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the conventions of The Clements Checklist of Birds of the World, 2023b edition. [2]
Charadrius is a Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate. It derives from Ancient Greek kharadrios a bird found in ravines and river valleys (kharadra, "ravine"). The specific semipalmatus is Latin and comes from semi, "half" and palma, "palm". Like the English name, this refers to its only partially webbed ...
Adding to this conundrum are fossilized footprints of bird-like tracks that are 210 million years old—a good 60 million years before the arrival of the genus Archaeopteryx, one of the oldest ...
The palmate newt (Lissotriton helveticus) is a species of newt found in Western Europe, from Great Britain to the northern Iberian Peninsula. It is 5–9.5 cm (2.0–3.7 in) long and olive or brown with some dark spots. The underside is yellow to orange, and the throat, unlike in the similar smooth newt, always unspotted. A dark stripe runs ...
Experts say vehicle-based attacks are simple for a 'lone wolf' terrorist to plan and execute, and challenging for authorities to prevent.
Singapore has about 65 species of mammals, 390 species of birds, 110 species of reptiles, 30 species of amphibians, more than 300 butterfly species, [1] 127 dragonfly species, [2] and over 2,000 recorded species of marine wildlife. [3] [4]