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A crab-eating macaque using a stone. 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.
Falconry training and technique. Training raptors (birds of prey) is a complex undertaking. Books containing advice by experienced falconers are still rudimentary at best. Many important details vary between individual raptors, species of raptors and between places and times. The keeping and training of any raptor is strictly and tightly ...
A fish can have up to three dorsal fins. The dorsal fins serve to protect the fish against rolling, and assist it in sudden turns and stops. The bones that support the dorsal fin are called pterygiophores. There are two to three of them: " proximal " (axonosts), "middle" (baseosts), and " distal ".
Chimaeras differ from other cartilagenous fish, having lost both the spiracle and the fifth gill slit. The remaining slits are covered by an operculum, developed from the septum of the gill arch in front of the first gill. [6] The shared trait of breathing via gills in bony fish and cartilaginous fish is a famous example of symplesiomorphy.
Once Upon a Forest is a wildlife photographer who captures beautiful moments of forest animals and sets them to soothing, relaxing music. If you ever need a moment of Zen, head to her page because ...
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.
They are absent from the North Atlantic, although fossil remains of short-tailed albatross show they once lived there up to the Pleistocene, [2] and occasional vagrants are found. Great albatrosses are among the largest of flying birds, with wingspans reaching up to 2.5–3.5 metres (8.2–11.5 ft) and bodies over 1 metre (3.3 ft) in length. [3]
t. e. Ornithology is a branch of zoology that concerns the study of birds. [1] Several aspects of ornithology differ from related disciplines, due partly to the high visibility and the aesthetic appeal of birds. [2] It has also been an area with a large contribution made by amateurs in terms of time, resources, and financial support.