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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]
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]
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]
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.
It is known to hybridise with the chorister robin-chat (C. dichroa). [8] The clutch varies between 2 and 4 eggs, and the female incubates the clutch on her own, the eggs hatch after around 2 weeks and the female broods the young, on and off, for the first week after hatching> The young fledge after 11 or 12 days, although 17 days has been recorded.
The markings are denser at the larger end of the egg, where they form an irregular cap. Some eggs are blotched with dark reddish-brown at the large end. They are about 0.76–0.84 inches (1.9–2.1 cm) long and 0.55–0.62 inches (1.4–1.6 cm) wide. [28] Three to four eggs is the usual clutch. [36]
The red-capped robin (Petroica goodenovii) is a small passerine bird native to Australia. Found in drier regions across much of the continent, it inhabits scrub and open woodland. Like many brightly coloured robins of the family Petroicidae, it is sexually dimorphic. Measuring 10.5–12.5 cm (4.1–4.9 in) in length, the robin has a small, thin ...
The Cape robin-chat (Dessonornis caffer) is a small passerine bird of the Old World flycatcher family Muscicapidae. It has a disjunct range from South Sudan to South Africa. [3] The locally familiar and confiding species [6] has colonized and benefited from a range of man-altered habitats, including city suburbs and farmstead woodlots. [7]