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Parental care refers to the level of investment provided by the mother and the father to ensure development and survival of their offspring. In most birds, parents invest profoundly in their offspring as a mutual effort, making a majority of them socially monogamous for the duration of the breeding season.
Biparental care is particularly prevalent in mammals and birds. [ 23 ] 90% of bird species are monogamous, in which biparental care patterns are predominant. [ 19 ] In birds, this parental care system is generally attributed to the ability of male birds to engage in most parental behaviours, with the exception of egg-laying.
Biparental care is common in birds, where the role of the male involves finding food and defending the nest, and the maternal behaviors involve caring for the chicks in the nest. [3] In many cases, the male will regurgitate partially digested food into the mouth of the female and then the female will distribute the food equally amongst her ...
Amongst birds, biparental care is the overwhelming majority with 90% of avian couples sharing the load. Slide back along the evolutionary scale and paternal care becomes not only more common, but ...
In contrast to the large clutch sizes found in many bird species with biparental care, bats typically produce single offspring, which may be a limitation related to lack of male help. It has been suggested, though not without controversy, that paternal care is the ancestral form of parental care in birds. [9]
Sexual selection is an evolutionary concept that has been used to explain why, in some species, male and female individuals behave differently in selecting mates. In 1930, Ronald Fisher wrote The Genetical Theory of Natural Selection, [3] in which he introduced the modern concept of parental investment, introduced the sexy son hypothesis, and introduced Fisher's principle.
Birds are one of the only major taxa where monogamy is the dominant mating system. [4] ... Moreover, all seabirds have obligate biparental care, so it would be ...
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