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The webbed or palmated feet of birds can be categorized into several types: Palmate: only the anterior digits (2–4) are joined by webbing. Found in ducks, geese and swans, gulls and terns, and other aquatic birds (auks, flamingos, fulmars, jaegers, loons, petrels, shearwaters and skimmers).
Webbed toes is the informal and common name for syndactyly affecting the feet—the fusion of two or more digits of the feet. This is normal in many birds, such as ducks; amphibians, such as frogs; and some mammals, such as kangaroos.
Webbed feet of a mute swan. Here, the delta (triangular) shape of the foot is clearly visible. This shape allows for the formation of leading edge vortices and lift-based propulsion during swimming. [1] The webbed foot is a specialized limb with interdigital membranes (webbings) that aids in aquatic locomotion, present in a variety of tetrapod ...
The shared history of birds and dinosaurs is well-established, but exactly how true birds evolved during the Mesozoic is a bit of a mystery. Adding to this conundrum are fossilized footprints of ...
Classically, bird relationships were based solely on morphological characteristics. The Pelecaniformes were traditionally, but erroneously, defined as birds that have feet with all four toes webbed (totipalmate), as opposed to all other birds with webbed feet where only three of four were webbed.
The family Anatidae includes the ducks and most duck-like waterfowl, such as geese and swans. These birds are adapted to an aquatic existence with webbed feet, bills which are flattened to a greater or lesser extent, and feathers that are excellent at shedding water due to special oils. Thirty-nine species have been recorded in Nevada.
The western meadowlark is the state bird of North Dakota. This list of birds of North Dakota includes species documented in the U.S. state of North Dakota. The list is derived from Checklist of North Dakota Birds produced in April 2021 by the North Dakota Game and Fish Department (NDGFD). The basic NDGFD list contains 420 confirmed and extant species, two extinct species. Three additional ...
The Baltimore oriole is the state bird of Maryland. This list of birds of Maryland includes species credibly documented in the U.S. state of Maryland and accepted by the Maryland / District of Columbia Records Committee (MRC) of the Maryland Ornithological Society as of 2022. There are 456 species included in the official list. Eight additional species of questionable origin and two of exotic ...