Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 61)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 59)

Change: Nearly all young in nests of Pale-headed Brush-Finches are infested with botfly larvae. This individual (a cowbird) is particularly heavily infested.Botfly parasitationparasitism has not stopped the Pale-headed Brush-Finch population from increasing markedly after cowbird control began.Photo by Martin Schaefer   View changes from previous version. (Word count: 45)

Change: MostNearly all young in nests of Pale-headed Brush-Finches are infested with botfly larvae. This individual is particularly heavily infested (so thank God that it is a cowbird!).Botfly parasitation has not stopped the Pale-headed Brush-Finch population from triplingincreasing markedly after cowbird control began.Photo by Martin Schaefer   View changes from previous version. (Word count: 51)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 49)

Change: Most nestlings of the Pale-headed Brush-Finch are infested with botfly larvae. This individual is heavily infested (so thanks god that it is a cowbird!).Botfly parasitation has not stopped the Pale-headed Brush-Finch population from tripling after cowbird control began.Photo by Martin Schaefer   View changes from previous version. (Word count: 47)