Daily Postcard: Brown Headed Cowbird In White Rock

Daily Postcard: A Brown Headed Cowbird singing recently at a residence in White Rock. Centuries ago this bird probably followed bison herds on the Great Plains, feeding on insects flushed from the grass by the grazers. Today it follows cattle, and occurs abundantly from coast to coast. Its spread has represented bad news for other songbirds: Cowbirds lay their eggs in nests of other birds. Heavy parasitism by cowbirds has pushed some species to the status of endangered and has probably hurt populations of some others. Source: www.audubon.org. Photo by Nancy Ann Hibbs

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