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Owls are divided into two families: the true (or typical) owl family, Strigidae, and the barn owl and bay owl family, Tytonidae. [2] Owls hunt mostly small mammals , insects , and other birds, although a few species specialize in hunting fish .
First hesperornithes, toothed diving birds. Earliest limopsid, verticordiid, and thyasirid bivalves. 100 Ma First ants. [95] 100–95 Ma Spinosaurus appears in the fossil record. [96] 95 Ma First crocodilians evolve. [97] 90 Ma Extinction of ichthyosaurs. Earliest snakes and nuculanid bivalves.
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.
The barred owl (Strix varia), also known as the northern barred owl, striped owl or, more informally, hoot owl or eight-hooter owl, is a North American large species of owl. A member of the true owl family, Strigidae, they belong to the genus Strix , which is also the origin of the family's name under Linnaean taxonomy .
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 ...
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 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.
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 ...