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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] A spell of very low temperatures in winter can, however, result in higher mortality rates. [40]
The American robin rejects cowbird eggs, so brood parasitism by the brown-headed cowbird is rare, and the parasite's chick does not often survive to fledging. [41] In a study of 105 juvenile robins, 77.1% were infected with endoparasites, Syngamus sp. being the most commonly encountered, in 57.1% of the birds. [42]
'robin' (erithacos) [1]) is a genus of passerine bird that contains a single extant species, the European robin (Erithacus rubecula). The Japanese robin and Ryukyu robin were also placed in this genus (as Erithacus akahige and E. komadori), but were moved to the genus Larvivora in 2006. [2]
The scarlet robin is a territorial and monogamous species, and defends its nesting territories both from others of the same species and from pairs of the related flame robin. [7] Territories are established and breeding commences before the migratory flame robin arrives in its range (where the two co-occur). [7]
Enterprise life cycle, the process of changing a business enterprise; Project life cycle; Product lifecycle, the stages in the lifespan of a commercial or consumer product; New product development, the process of bringing a new product to market; Life-cycle assessment, the analysis of the environmental impacts associated with a product
Trillium erectum, the red trillium, [4] also known as wake robin, [5] purple trillium, [6] bethroot, [7] or stinking benjamin, [8] is a species of flowering plant in the family Melanthiaceae. The plant takes its common name "wake robin" by analogy with the European robin , which has a red breast heralding spring.
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In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of stages of the life of an organism, that begins as a zygote, often in an egg, and concludes as an adult that reproduces, producing an offspring in the form of a new zygote which then itself goes through the same series of stages, the ...