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A feral cat with an American Robin.Plate from Forbush (1916). Outdoor cats are the largest human cause of bird mortality. A 2013 study by Scott R. Loss and others of the Smithsonian Conservation Biology Institute and the U.S. Fish and Wildlife Service found that free-ranging domestic cats are likely the top human-caused threat to birds and small mammals in the United States, killing an ...
Electrofishing is a common scientific survey method used to sample fish populations to determine abundance, density and species composition. When performed correctly, electrofishing results in no permanent harm to the fish, which return to their natural mobility state in as little as two minutes after being caught. [1]
Automated species identification is a method of making the expertise of taxonomists available to ecologists, parataxonomists and others via digital technology and artificial intelligence. Today, most automated identification systems rely on images depicting the species for the identification. [1] Based on precisely identified images of a ...
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Ichthyology is the branch of zoology devoted to the study of fish, including bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 33,400 species of fish had been described as of October 2016, with approximately 250 new species described each year. [1][citation needed]
The word is, more broadly, used as a pejorative [1] catch-all term for experimentation on live animals [2] [3] [4] by organizations opposed to animal experimentation, [5] but the term is rarely used by practicing scientists. [3] [6] Human vivisection, such as live organ harvesting, has been perpetrated as a form of torture. [7] [8]
A small dog that authorities said was washed 20 feet into a tree by the powerful floodwaters of Hurricane Helene last week is back on solid ground thanks to some local firefighters and a K-9 unit ...
The drinking bird is a heat engine that exploits a temperature difference to convert heat energy to a pressure difference within the device, and performs mechanical work. Like all heat engines, the drinking bird works through a thermodynamic cycle. The initial state of the system is a bird with a wet head oriented vertically.