Labels:book | earth | microwave | person | sky | windowpane OCR: FAMILY LIFE AT O As the incubation period nears, female raptors develop patches Brood patches form when the feathers around the underbelly that come into contact with the eggs begin to molt The exposed area of featherless skin becomes warmed RA capillaries. Heat transfer to the eggs is increased by the direct contact of the bare skin against the eggshell.In species ir which incubation is shared by both nesting partners such as the vultures the male also develops patch. contents ontions 4inb bookmark last menu 410h quit
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