Brown Headed Cowbird Chicks Zoology Division Of Birds
Lation growth rate in the Song Sparrow (Melospiza melodia) The Song Sparrow is one of the most frequently used cowbird hosts in North America (Smith and MyersSmith 1998), and there is also much descriptive data available on the effects of parasitism on this species (eg, Nice 1937, Smith 1981, Smith and Arcese 1994, Arcese et al 1996, Rogers et al 1997, Arcese and Smith The bird on the right is a fledged Brown Cowbird who was raised by this adult Song Sparrow on the left Cowbirds don't build any nest at all or raise any kids, sounds like the life What they do is find other bird's nests and lay their eggs in them stealthily Some birds realize that one egg doesn't belong and will knock it out of the nest While others must have had too much to
