Search results
Results from the WOW.Com Content Network
Animal migration is the relatively long-distance movement of individual animals, usually on a seasonal basis. It is the most common form of migration in ecology. It is found in all major animal groups, including birds , mammals , fish , reptiles , amphibians, insects , and crustaceans .
Bighorn sheep migrate between high mountains, where they are safer from predators, and valleys where there is more food in winter. Altitudinal migration is a short-distance animal migration from lower altitudes to higher altitudes and back. [1] [2] Altitudinal migrants change their elevation with the seasons making this form of animal migration ...
Wildebeest migrating in the Serengeti. Migration, in ecology, is the large-scale movement of members of a species to a different environment.Migration is a natural behavior and component of the life cycle of many species of mobile organisms, not limited to animals, though animal migration is the best known type.
Animals that remain somewhat active during the winter months often provision their nests and dens with food and construct bedding areas and chambers that are lined with grasses, leaves, fur ...
Partial migration is very common in the southern continents; in Australia, 44% of non-passerine birds and 32% of passerine species are partially migratory. [25] In some species, the population at higher latitudes tends to be migratory and will often winter at lower latitude.
Migration of cranes. Overwintering is the process by which some organisms pass through or wait out the winter season, or pass through that period of the year when "winter" conditions (cold or sub-zero temperatures, ice, snow, limited food supplies) make normal activity or even survival difficult or near impossible. In some cases "winter" is ...
Only a handful of migratory animals worldwide are seeing their populations improve; among them are blue and humpback whales. According to the report, one of greatest threats to migratory species ...
Migrants tend to travel away from polar and temperate zones in the winter because of low temperatures and shortage of food in their breeding areas. [1] [2] During spring migration, birds return to their breeding sites to exploit the temporary superabundance of food, allowing them to raise more young. [3]