Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41918
Whistling swans breeding on the northwest coast of New Quebec
No abstract available.
Authors
J.D. Heyland, E.B. Chamberlain, C.F. Kimball, D.H. Baldwin
An outbreak of fowl cholera in Everglades National Park
No abstract available.
Authors
R.W. Klukas, L. N. Locke
Challenge infection as a means of determining the rate of disease resistant Trichomonas gallinae-free birds in a population
Trichomonas gallinae-free pigeons and mourning doves were infected with the Jones' Barn strain of T. gallinae to determine the rate of disease resistant T. gallinae-free birds in each population. Although all birds became infected 88% of the pigeons were resistant to trichomoniasis while 82% of the mourning doves were resistant. It was concluded that these birds had been previously infected and sp
Authors
R. M. Kocan, J.O. Knisley
Active anting in the Puerto Rican tanager
Anting, a bird’s intentional exposure of its body surface to chemical substances secreted by ants or other agents, has been recorded in over 20 species of birds of 40 families, mostly within the order Passeriformes. Our observations of anting in the Puerto Rico tanager (Neospingus speculiferus) extend the phenomenon to a new genus and the 14th species of the Thraupidae.
Authors
W.B. King, C.B. Kepler
Passive immunization of pigeons against trichomoniasis
Nonimmune homing pigeons Columba livia were infected with the Jones' Barn strain of Trichomonas gallinae and subsequently transfused with plasma from acute or chronically infected pigeons harboring one of 3 different strains of T. gallinae. The transfusions were either a single 2 mi dose given one day after inoculation or three 1 ml doses given 0, 5, and 10 days after inoculation. Plasma from pi
Authors
R. M. Kocan
Incidence of malaria in a wintering population of canvasbacks (Aythya valisineria) on Chesapeake Bay
Canvasback ducks wintering on Chesapeake Bay had a 6% incidence of Leucocytozoon sirnondi and 2% incidence of Haemoproteus. Sub-inoculation of whole blood into Pekin ducklings produced a Plasmodium infection rate of 31%. Females were more frequently infected (12/22) than males (15/68). The parasite was identified as P. circumflexum.
Authors
R. M. Kocan, J.O. Knisley
Woodcock feeding habits as related to summer field usage in central Maine
In 1968 and 1969, 60 American woodcock (Philohela minor) were collected before and after alighting on summer fields in central Maine. A comparison of stomach contents from these birds showed that woodcock fed prior to entering fields at dusk. No evidence was found to indicate that any substantial amount of food was eaten by birds remaining on fields throughout the night. In 1968, the availabili
Authors
W.B. Krohn
Accelerated research on migratory webless game birds
No abstract available.
Authors
D. MacDonald, T.R. Evan