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Columbidae (/ k ə ˈ l ʌ m b ɪ d iː / kə-LUM-bih-dee) is a bird family consisting of doves and pigeons.It is the only family in the order Columbiformes.These are stout-bodied birds with short necks and short slender bills that in some species feature fleshy ceres.
The 500 line segments defined above together form a shape in the Cartesian plane that resembles a bird with open wings. Looking at the line segments on the wings of the bird causes an optical illusion and may trick the viewer into thinking that the segments are curved lines. Therefore, the shape can also be considered as an optical artwork.
Red kite (Milvus milvus) in flight, showing remiges and rectrices. Flight feathers (Pennae volatus) [1] are the long, stiff, asymmetrically shaped, but symmetrically paired pennaceous feathers on the wings or tail of a bird; those on the wings are called remiges (/ ˈ r ɛ m ɪ dʒ iː z /), singular remex (/ ˈ r iː m ɛ k s /), while those on the tail are called rectrices (/ ˈ r ɛ k t r ...
The smallest flying vertebrates are the bee hummingbird and the bumblebee bat, both of which may weigh less than 2 grams (0.071 oz). They are thought to represent the lower size limit for endotherm flight. [citation needed] The smallest flying invertebrate is a fairyfly wasp species, Kikiki huna, at 0.15 mm (0.0059 in) (150 μm). [23] Fastest.
This is a list of the fastest flying birds in the world. A bird's velocity is necessarily variable; a hunting bird will reach much greater speeds while diving to catch prey than when flying horizontally. The bird that can achieve the greatest airspeed is the peregrine falcon (Falco peregrinus), able to exceed 320 km/h (200 mph) in its dives.
George R. White of Stoney Brook, Long Island, New York, former aviator and flying instructor during the war, on the beach at St. Augustine where he attempted to make the first successful bird-like ...
In order for birds to balance these forces, certain physical characteristics are required. Asymmetrical wing feathers, found on all flying birds with the exception of hummingbirds, help in the production of thrust and lift. Anything that moves through the air produces drag due to friction. The aerodynamic body of a bird can reduce drag, but ...
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