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The main prey of Pel's fishing owls is fish. They can take fish weighing as much as 2 kg (4.4 lb), but most fish caught are much smaller, usually weighing 100–200 g (3.5–7.1 oz). They are not picky eaters among fish species and any fish that is in a reasonable size range and found close to the water's surface is readily caught and consumed.
Tool use by non-humans is a phenomenon in which a non-human animal uses any kind of tool in order to achieve a goal such as acquiring food and water, grooming, combat, defence, communication, recreation or construction. Originally thought to be a skill possessed only by humans, some tool use requires a sophisticated level of cognition.
Fish migrations involve movements of schools of fish on a scale and duration larger than those arising during normal daily activities. [1] Some particular types of migration are anadromous, in which adult fish live in the sea and migrate into fresh water to spawn; and catadromous, in which adult fish live in fresh water and migrate into salt ...
A wing-clipped Meyer's parrot perching on a drawer handle. While clipping is endorsed by some avian veterinarians, others oppose it. [7]By restricting flight, wing clipping may help prevent indoor birds from risking injury from ceiling fans or flying into large windows, but no evidence shows that clipped birds are safer than full-winged ones, only that clipped birds are subject to different ...
Birds and mammals (including humans) normally adjust focus by changing the shape of their lens, but fish normally adjust focus by moving the lens closer to or further from the retina. Fish retinas generally have both rod cells and cone cells (for scotopic and photopic vision ), and most species have colour vision .
Tetraodontidae. Tetraodontidae is a family of primarily marine and estuarine fish of the order Tetraodontiformes. The family includes many familiar species variously called pufferfish, puffers, balloonfish, blowfish, blowers, blowies, bubblefish, globefish, swellfish, toadfish, toadies, toadle, honey toads, sugar toads, and sea squab. [1]
The device involves 1.) a vest redistributing the weight of the camera to the hips of the cameraman and, 2.) a spring-loaded arm working to minimize the effects of camera movement. A video tap simultaneously frees the camera operator from the eyepiece, who is then free to travel through any walkable terrain while filming. Story board
Hakes are medium-to-large fish averaging from 0.5 to 3.6 kilograms (1 to 8 pounds) in weight, with specimens as large as 27 kg (60 lb). [2] The fish can grow up to 1 metre (3 ft 3 in) in length with a lifespan of as long as 14 years. Hake may be found in the Atlantic Ocean and Pacific Ocean in waters from 200 to 350 metres (660 to 1,150 ft) deep.