Bird tips: Look for an immigrant, a nomad and a harbinger of spring at your feeder
Brown-headed cowbird The adult male brown-headed cowbird is a hefty blackbird living up to its name. The image here is molting into adult plumage. The female is a dull gray-brown all over. They are not fussy at feeders and will take all the common seed varieties, but should be discouraged as they are parasites taking a heavy toll on smaller songbirds, pushing several to become endangered. Centuries ago, they followed the herds of bison. Today, it follows herds of cattle and was confined to the open grasslands. It has expanded and has spread coast to coast. Their nomadic habits kept them from ...
Source: berkshireeagle.com