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Vision is the most important sense for birds, since good eyesight is essential for safe flight. Birds have a number of adaptations which give visual acuity superior to that of other vertebrate groups; a pigeon has been described as "two eyes with wings". [ 1] Birds are theropod dinosaurs, [ 2][ 3] and the avian eye resembles that of other ...
The anatomy of bird's respiratory system, showing the relationships of the trachea, primary and intra-pulmonary bronchi, the dorso- and ventro-bronchi, with the parabronchi running between the two. The posterior and anterior air sacs are also indicated, but not to scale. Inhalation–exhalation cycle in birds.
The nictitating membrane (from Latin nictare, to blink) is a transparent or translucent third eyelid present in some animals that can be drawn across the eye from the medial canthus to protect and moisten it while maintaining vision. All Anura [1] (tailless amphibians), and some reptiles, birds, and sharks have full nictitating membranes; in ...
Pecten oculi. The pecten or pecten oculi is a comb -like structure of blood vessels belonging to the choroid in the eye of a bird. It is a non- sensory, pigmented structure that projects into the vitreous humor from the point where the optic nerve enters the eyeball. [ 1] The pecten is believed to both nourish the retina and control the pH of ...
v. t. e. A bird's-eye viewis an elevated view of an object or location from a very steep viewing angle, creating a perspectiveas if the observer were a birdin flight looking downward. Bird's-eye views can be an aerial photograph, but also a drawing, and are often used in the making of blueprints, floor plans and maps. [1]
Ornithology. In ornithology, the lore is the region between the eye and bill on the side of a bird's head. [1] This region is sometimes featherless, and the skin may be tinted, as in many species of the cormorant family. [2] This area, which is directly in front of the eye, features a "loral stripe" in many bird species including the red-capped ...
Eagle Eye was released on DVD and Blu-ray only in select stores on December 26, 2008, three months after its theatrical release, September 26, 2008. In the first week on the DVD sales chart, Eagle Eye sold 182,592 units which translated to US$3,300,000 (equivalent to about $4,670,000 in 2023) in revenue. [ 27 ]
We've heard of homes that blend right into the great outdoors and treehouse living, but this takes all of that to a whole new level. Californian artist Jayson Fann has created human-sized bird's ...
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