Hooded Warbler (Wilsonia citrina) Science Article 4
abstract
Adoption is a widespread phenomenon in birds and generally occurs at a low frequency within a species (reviewed in Rohwer 1986, Meek and Robertson 1991). Adoption of fledglings is common in seabirds due to the mobility of chicks soon after hatch.
BRIDGET J .STUTCHBURY, The Auk 113(1):218-220, 1996