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Eyesight is a particular characteristic of the owl that aids in nocturnal prey capture. Owls are part of a small group of birds that live nocturnally, but do not use echolocation to guide them in flight in low-light situations. Owls are known for their disproportionally large eyes in comparison to their skulls.
Rich, Patricia Vickers & David J. Bohaska, 1981. The Ogygoptyngidae, a New Family of Owls from the Paleocene of North America. Alcheringa 5: 95–102. Sankar Chatterjee. The Rise of Birds: 225 Million Years of Evolution, pg. 251. James R. Duncan. Owls of the World: Their Lives, Behavior and Survival, pg. 72.
The bird family Tytonidae, which includes the barn owls Tyto and the bay owls Phodilus, is one of the two families of owls, the other being the true owls or typical owls, Strigidae. They are medium to large owls with large heads and characteristic heart-shaped faces. They have long, strong legs with powerful talons. They also differ from the ...
The evolution of birds began in the Jurassic Period, with the earliest birds derived from a clade of theropod dinosaurs named Paraves. [1] Birds are categorized as a biological class, Aves. For more than a century, the small theropod dinosaur Archaeopteryx lithographica from the Late Jurassic period was considered to have been the earliest bird.
Cross sectioned great grey owl specimen showing the extent of the body plumage, Zoological Museum, Copenhagen Skeleton of a Strigidae owl. While typical owls (hereafter referred to simply as owls) vary greatly in size, with the smallest species, the elf owl, being a hundredth the size of the largest, the Eurasian eagle-owl and Blakiston's fish owl, owls generally share an extremely similar ...
Red owl: Tyto soumagnei (Grandidier, A, 1878) 10 Western barn owl: Tyto alba (Scopoli, 1769) 11 American barn owl: Tyto furcata (Temminck, 1827) 12 Eastern barn owl: Tyto javanica (Gmelin, JF, 1788) 13 Andaman masked owl: Tyto deroepstorffi (Hume, 1875) 14 Ashy-faced owl: Tyto glaucops (Kaup, 1852) 15 African grass owl: Tyto capensis (Smith, A ...
It may still exist, as an owl matching this bird's description was encountered in August 2006. Peleng masked owl, Tyto rosenbergii pelengensis (Peleng, Banggai Islands, mid-20th century) A subspecies of the Sulawesi masked owl or a distinct species. It may possibly still exist, but the only known specimen was taken in 1938 and there have been ...
The evolution of birds is thought to have begun in the Jurassic Period, with the earliest birds derived from theropod dinosaurs. Birds are categorized as a biological class, Aves. The earliest known species in Aves is Archaeopteryx lithographica, from the Late Jurassic period. Modern phylogenetics place birds in the dinosaur clade Theropoda.