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Mobbing is the harassing of a predator by many prey animals. Mobbing is usually done to protect the young in social colonies. For example, red colobus monkeys exhibit mobbing when threatened by chimpanzees, a common predator. The male red colobus monkeys group together and place themselves between predators and the group's females and juveniles.
The Somali ostrich occurs in the Horn of Africa, having evolved isolated from the common ostrich by the geographic barrier of the East African Rift. In some areas, the common ostrich's Masai subspecies occurs alongside the Somali ostrich, but they are kept from interbreeding by behavioral and ecological differences. [15]
These principally take the form of predators; most albatross and petrel species are clumsy on land and unable to defend themselves from mammals such as rats, feral cats and pigs. This phenomenon, ecological naivete , has resulted in declines in many species and was implicated in the extinction of the Guadalupe storm petrel. [ 105 ]
The common ostrich is the largest and heaviest living bird. Males stand 2.1 to 2.75 m (6 ft 11 in to 9 ft 0 in) tall and weigh 100 to 130 kg (220 to 290 lb), whereas females are about 1.75 to 1.9 m (5 ft 9 in to 6 ft 3 in) tall and weigh 90 to 120 kg (200 to 260 lb). [20]
The great majority (80–99.99%) of individuals born do not survive to reproductive age, with perhaps 50% of this mortality rate attributed to predation. [1] In order to deal with this ongoing escapist battle, insects have evolved a wide range of defense mechanisms.
Here's a sampling of the coolest animal discoveries from 2020. Octopuses taste by touching objects with their tentacles. 22 discoveries this year changed our understanding of how animals ...
The Masai ostrich (Struthio camelus massaicus), also known as the East African ostrich is a red-necked subspecies variety of the common ostrich and is endemic to East Africa. [2] [3] It is one of the largest birds in the world, second only to its sister subspecies Struthio camelus camelus. [4] Today it is farmed for eggs, meat, and feathers. [5 ...
Heralded as the world's largest rodents, the South American rainforest natives can actually weigh as much as a full grown man.. But despite the fact that they apparently like to eat their own dung ...