Comprehensive Description
provided by Smithsonian Contributions to Zoology
Vermivora ruficapilla (Wilson)
This infrequently reported victim of the brown-headed cowbird was known (Friedmann, 1963:95) to be parasitized in 16 instances in Quebec, Massachusetts, New York, Michigan, Ontario, Minnesota, and Manitoba. Nine more cases may be added: a set of 2 eggs of the host and 1 of the parasite, collected near Oconto, Wisconsin, 28 May 1962, now in the holdings of the Western Foundation; 4 instances in Ontario, (7 parasitized nests—3 previously known to us—out of 48 nests (14.6 percent) reported to the nest records file of the Royal Ontario Museum); and 4 instances of parasitism in New York State (out of 5 mentioned by Bull, 1974:537). The Ontario data are the first to reveal a high incidence of parasitism anywhere.
LUCY's WARBLER
- bibliographic citation
- Friedmann, Herbert, Kiff, Lloyd F., and Rothstein, Stephen I. 1977. "A further contribution of knowledge of the host relations of the parasitic cowbirds." Smithsonian Contributions to Zoology. 1-75. https://doi.org/10.5479/si.00810282.235
