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Some predators, like the leopard, and some potential prey like the Egyptian nightjar, use disruptive patterns. [4] Disruptive patterns are defined by A. Barbosa and colleagues as "characterized by high-contrast light and dark patches, in a nonrepetitive configuration, that also provide camouflage by disrupting the recognizable shape or ...
There is a strong evolutionary pressure for prey animals to avoid predators through camouflage, and for predators to be able to detect camouflaged prey. There can be a self-perpetuating coevolution, in the shape of an evolutionary arms race, between the perceptive abilities of animals attempting to detect the cryptic animal and the cryptic characteristics of the hiding species.
At the second level, an animal performs a programmed act of behaviour, as when a prey animal feigns death to avoid being eaten. At the third level, the deceptive behaviour is at least partially learnt, as when a bird puts on a distraction display , feigning injury to lure a predator away from a nest.
The giraffe is a large African hoofed mammal belonging to the genus Giraffa.It is the tallest living terrestrial animal and the largest ruminant on Earth.Traditionally, giraffes have been thought of as one species, Giraffa camelopardalis, with nine subspecies.
African giraffes are in danger of becoming extinct. Hunting and poaching have decimated the continent's giraffe population by about 40 percent, according to one estimate. There are now only about ...
Escape response in Antarctic krill.. Escape response, escape reaction, or escape behavior is a mechanism by which animals avoid potential predation.It consists of a rapid sequence of movements, or lack of movement, that position the animal in such a way that allows it to hide, freeze, or flee from the supposed predator.
As of 2018, Rothschild's giraffe is classified as near threatened. Very few locations are left where Rothschild's giraffe can be seen in the wild, with notable spots being Lake Nakuru National Park in Kenya [14] and Murchison Falls National Park [15] in northern Uganda. Their predators are hyenas, lions, crocodiles, and leopards. [10]
Some authors have argued that adult giraffes are cryptic, since when standing among trees and bushes they are hard to see at even a few metres' distance. [55] However, adult giraffes move about to gain the best view of an approaching predator, relying on their size and ability to defend themselves, even from lions, rather than on camouflage. [55]