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Isopentane, also called methylbutane or 2-methylbutane, is a branched-chain saturated hydrocarbon (an alkane) with five carbon atoms, with formula C 5 H 12 or CH(CH 3) 2 (C 2 H 5). Isopentane is a volatile and flammable liquid.
Birds of prey or predatory birds, also known as (although not the same as) raptors, are hypercarnivorous bird species that actively hunt and feed on other vertebrates (mainly mammals, reptiles and other smaller birds).
Another study found that the perception threshold of 3-mercapto-3-methylbutan-1-ol is 1500 ng/L. [15] This study found that MMB had a "catty" odor, had an orthonasal odor threshold of 2 μg/L in water, and was found in concentrations from 150-1500 μg/kg in coffee. The synthesis of MMB in wine is brought on by the fermentation process.
The willow ptarmigan is the state bird of Alaska. The list of birds of Alaska includes every wild bird species recorded in the U.S. state of Alaska, based on the list published by the Alaska Checklist Committee. As of January 2022, there were 534 species on the official list. Of them, 55 are considered rare, 149 are casual, and 79 are accidental, all as defined below. Another 18 and a species ...
Secondary metabolites produced by plants are consumed and sequestered by a variety of arthropods and, in turn, toxins found in some amphibians, snakes, and even birds can be traced back to arthropod prey. [8] [9] There are a variety of special cases for considering mammalian antipredatory adaptations as chemical defenses as well. [10]
Crested caracara, Brazoria National Wildlife Refuge Crested caracara (C. plancus) in flight Caracaras are birds of prey in the family Falconidae.They are traditionally placed in subfamily Polyborinae with the forest falcons, [1] but are sometimes considered to constitute their own subfamily, Caracarinae, [2] or classified as members of the true falcon subfamily, Falconinae. [3]
Teratornithidae is an extinct family of very large birds of prey that lived in North and South America from the Late Oligocene to Late Pleistocene. They include some of the largest known flying birds. Its members are known as teratorns.
Telluraves (also called land birds or core landbirds) is a recently defined [2] clade of birds defined by their arboreality. [3] Based on most recent genetic studies, the clade unites a variety of bird groups, including the australavians (passerines, parrots, seriemas, and falcons) as well as the afroavians (including the Accipitrimorphae – eagles, hawks, buzzards, vultures etc. – owls and ...