How Now, Cowbird?

A late season chick. But what species?Here comes a parent… oh-oh. Chipping Sparrow.And Brown-headed Cowbird. Brown-headed Cowbirds are brood parasites. They lay their eggs in the nests of other species. The hatchling may kill off the hosts’ own offspring. I’ve never seen this in action. BHC’s lay their eggs “in 220 species of birds. Recent genetic analyses have shown that most individual females specialize on one particular host species.And another, seen two days later not so far from the first scene. Couldn’t see who was feeding this one, but it was pretty small, and may very will have been another Chipping Sparrow.

5 Responses to “How Now, Cowbird?”

  1. 1 alaspooryorick July 31, 2019 at 7:18 am

    power barons of avian world.

  2. 3 Susan July 31, 2019 at 10:50 am

    Very exciting. Maybe you could make a documentary expressing your love of nature. A thought.

  1. 1 A Bigger Cowbird | Backyard and Beyond Trackback on August 16, 2019 at 7:01 am
  2. 2 Cuckoo, Cuckoo! | Backyard and Beyond Trackback on January 30, 2022 at 8:00 am

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