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Western moose eat terrestrial vegetation such as forbs and shoots from willow and birch trees and aquatic plants, including lilies and pondweed. Western moose can consume up to 9,770 calories a day, about 32 kilograms (71 lb). The Western moose, like other species, lacks upper front teeth but instead has eight sharp incisors on its lower jaw ...
A black garden ant (Lasius niger) engaging in necrophoresis. Necrophoresis is a sanitation behavior found in social insects – such as ants, bees, wasps, and termites – in which they carry away the dead bodies of members of their colony from the nest or hive area.
Ant mound holes prevent water from entering the nest during rain. In addition to defence against predators, ants need to protect their colonies from pathogens. Secretions from the metapleural gland, unique to the ants, produce a complex range of chemicals including several with antibiotic properties. [106]
T. fuscipennis bees have been discovered to engage in suicidal biting in order to defend the nest and against predators. Humans standing in the vicinity of nests are almost always attacked and experience painful bites. [23] The bees also crawl over the intruder into the ears, eye, mouth, and other cavities. [25]
A black drongo in a typical anting posture. Anting is a maintenance behavior during which birds rub insects, usually ants, on their feathers and skin.The bird may pick up the insects in its bill and rub them on the body (active anting), or the bird may lie in an area of high density of the insects and perform dust bathing-like movements (passive anting).
Two ants fighting over a dead wasp. Wars or conflicts can break out between different groups in some ant species for a variety of reasons. These violent confrontations typically involve entire colonies, sometimes allied with each other, and can end in a stalemate, the complete destruction of one of the belligerents, the migration of one of the groups, or, in some cases, the establishment of ...
In 1921, the U.S. naturalist Charles William Beebe reported on the ant mill phenomenon, which trace pheromones can trigger in army ants: If the animals are separated from the main trail of the colony, the blind ants follow the pheromone trails of ants running in front of them. These run in large circles until complete exhaustion or death ...
A study conducted on the Alaskan moose shows that with increasing group size, there is a decrease in foraging efficiency. [32] This is result of increased social aggression in the groups, as the individuals of the group spent most of its time in alert-alarm postures, thus spending less time foraging and feeding, reducing its foraging efficiency.