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The adult's main predator is the domestic cat; other predators include hawks and snakes. When feeding in flocks, it can be vigilant, watching other birds for reactions to predators. Brown-headed cowbirds (Molothrus ater) lay their eggs in robin nests (see brood parasite), but the robins usually reject the egg. [5]
Cape robin-chat (at right) feeding a red-chested cuckoo parasite chick. The Cape robin-chats are monogamous and highly territorial nesters. [19] A pair's territory usually comprises some fraction of a hectare, but its extent varies considerably depending on the habitat. [18] The nest site is within 5 feet (regularly 0 – 2 feet) from the ground.
When the female is ready, she lays about 3-5 eggs of greenish color, one egg per day, and incubates them for roughly 2 weeks. Once born, the young chicks are nurtured for a month, or 31 days, before they leave the nest and become independent. The robin does not mate for life and only finds a partner during the spring mating season.
Territorial disputes sometimes lead to fatalities, accounting for up to 10% of adult robin deaths in some areas. [38] Because of high mortality in the first year of life, a robin has an average life expectancy of 1.1 years; however, once past its first year, life expectancy increases. One robin has been recorded as reaching 19 years of age. [39]
Deep cup nest of the great reed-warbler. A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American robin or Eurasian blackbird, or the elaborately woven hanging nest of the Montezuma oropendola or the village weaver—that is too ...
The adult dusky robin has brown feathers on the top of its head and on the sides of its neck. [2] The distinctive lore and narrow dark-brown line extending from behind the eye to the ear-coverts, forming a dark eye-stripe, bordered above by cream supercilious that extends from the base of the bill and peters out above the rear ear-coverts. [ 2 ]
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There are usually two or three eggs and the incubation is done solely by the hen bird and lasts fourteen to fifteen days. Both parents feed the chicks, which leave the nest after about a fortnight but remain dependent on the adults for another six or seven weeks. The white-throated robin-chat is sometimes parasitised by the red-chested cuckoo. [6]