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It may be that altricial strategies in mammals, in contrast, develop in species with less migratory and more territorial lifestyles, such as Carnivorans, the mothers of which are capable of bearing a fetus in the early stages of development and focusing closely and personally upon its raising, as opposed to precocial animals which provide their ...
The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed senses of hearing, smell, and specially adapted eyesight. [1] Some animals, such as cats and ferrets, have eyes that can adapt to both low-level and bright day levels of illumination (see metaturnal).
Zugunruhe is borrowed from German; it is a German compound word consisting of Zug, "move, migration," and unruhe (anxiety, restlessness). The word was first published in 1707, when it was used to describe the "inborn migratory urge" in captive migrants. [4]
Of the 1,189 migratory creatures studied, more than one in five are threatened. ... They include species from all sorts of animal groups — whales, sharks, elephants, wild cats, raptors, birds ...
The extreme opposite of a cosmopolitan species is an endemic (native) species, or one that is found only in a single geographical location. Endemism usually results in organisms with specific adaptations to one particular climate or region, and the species would likely face challenges if placed in a different environment.
Reverse migration, also called reverse misorientation, [1] is a phenomenon whereby a bird migrates in the opposite direction to that typical of its species during the spring or autumn. [ 1 ] For example, if a bird breeding in central Asia reverses its normal southeasterly migration, as shown by the orange arrow, it will end up in Western Europe ...
Among migratory species, the cost of dispersal is paid either way. If the optimal-inbreeding hypothesis was correct, the benefits of inbreeding should result in philopatry among all species. Inbreeding depression is a phenomenon whereby deleterious alleles become fixed more easily within an inbreeding population. [17]
The reality is that every cat is different, of course, but one lucky cat owner hit the jackpot with her virtually opposite kitty siblings. Merlin and Ivy are both adorable ragdoll cats, but some ...