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Like other birds of prey, female hawks et al. are larger than males. Most members of this family are monogamous, and many form long-term pair bonds. Females generally incubate the eggs and brood the young, with some assistance from the male. The male brings food to the nest. Once the young no longer need to be brooded, both parents bring food. Extended parental care is the norm for this group, as it takes a relatively long time for young to learn to hunt.
No â not all birds develop a brood patch. Some birds like the blue-footed booby use their feet in place of a brood patch. Some birds like gulls and plovers have three brood patches, and other birds like pelicans and cormorants do not have an incubation patch at all. Usually only the sex that incubates the eggs gets a brood patch such as male phalaropes do but the females do not because only the male incubates their eggs. In such species as the bald eagle, they both develop an incubation patch because, as we see each day, they both share the incubation duties.