Publications

No abstract available.

No abstract available.

No abstract available.

In two successive years, 1964 and 1965, blood subinoculated from wild Canada geese, negative for Plasmodium by examination of peripheral blood smears, into 5-day-old domestic geese produced 60 % infection in the recipients. Prepatent and patent periods, as well as intensity of parasitemia showed much variation. Intramuscular inoculation produced the same prevalence as the intravenous route, but lo

No abstract available.

Some immature mourning doves (Zenaidura mncroura) are capable of breeding in their first (calendar) year of life. The breeding activities of immatures observed in this study included calling, copulating, and nesting. Development of sexual structures such as cloacal papillae, oviduct openings, and gonads was also regarded as evidence of breeding potential. Immatures were identified principally by w

No abstract available.

High productivity and survival of ring-necked pheasants (Phasianus colchicus) were correlated with high rainfall and cool temperatures in May and June during an 8-year period in southwestern North Dakota. These findings differed markedly from those of several earlier studies in the less arid midwestern United States where cool, wet weather in the spring generally affected pheasant populations adve

A few more than one-third of the goose and brant bands recovered by hunters were reported to the Bird Banding Laboratory (a rate of 0.361) during the 1962-64 hunting seasons. We calculated this band-reporting rate by comparing the estimated number of goose and brant bands recovered by hunters, based on a mail questionnaire survey, with the number of bands actually reported to the Bird Banding Labo

A total of 108 stomachs of wood ducks (Aix sponsa) collected from hunters on the upper end of Lake Marion, South Carolina, between November 29 and December 6, 1961, were examined for information on food habits. Six plants made up over 98 percent of the total volume. Five were tree fruits: water and pin oak (Quercus nigra and Q. palustris), baldcypress (Taxodium distichum), sweetgum (Liquidambar s

The first known record of Hooded Mergansers (Lophodytes cucullatus) nesting on the coastal plain of Maryland was in 1961, when Mr. Francis Uhler (pers. comm) found two clutches in Wood Duck nest boxes in impoundments at the Patuxent Wildlife Research Center, about five miles southeast of Laurel, Maryland. R.E. Stewart and C.S. Robbins (“Birds of Maryland and the District of Columbia,” N. Amer. Fau

This is a description of the renesting of two Wood Ducks (Aix sponsa) after hatching broods. I can find but two previous records of such behavior. Barnes (Auk, 65: 449, 1948) reported an incident of a hand-reared bird nesting in the wild in Indiana. This female was unable to get her brood out of the nest box, and subsequently hatched a second brood. Hester (SE Wildlife Conf., 1962; 8 pp., mimeo.)