Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16795
Breeding bird census, 1990: 48. Isolated oak-tuliptree-pine upland forest
No abstract available.
Authors
C.S. Robbins
Breeding bird census, 1990: 9. Mature beech-maple-oak bottomland forest
No abstract available.
Authors
C.S. Robbins
The ninety-first Christmas Bird Count: OC MD Ocean City, MD
No abstract available.
Authors
C.S. Robbins
The ninety-first Christmas Bird Count: SD MD Southern Dorchester County, MD
No abstract available.
Authors
C.S. Robbins
Home range and movements of juvenile Puerto Rican parrots
We studied home range and movements of 15 radio-marked, juvenile Puerto Rican parrots (Amazona vittata) fledging from wild nests during summer and fall, 1985-87. When juvenile parrots remained in the nest valley, home ranges during 1986 (.hivin.x = 32 .+-. 10 [SE] ha, n = 4) were larger (P = 0.0079) than during 1987 (.hivin.x = 13 .+-. 6 ha, n = 5). After radio-marked parrots integrated into adult
Authors
G.D. Lindsey, W.J. Arendt, J. Kalina, G.W. Pendleton
Denali Park wolf studies: Implications for Yellowstone
The Northern Rocky Mountain Wolf Recovery Plan approved by the U.S. Fish and Wildlife Service (1987) recommends re-establishment of wolves (Canis lupus) in Yellowstone National Park. Bills proposing wolf re-establishment in the Park have been introduced into the U.S. House and Senate. However, several questions have been raised about the possible effects of wolf re-establishment on other Yellowsto
Authors
L. David Mech, Thomas J. Meier, John W. Burch
Wolf predation risk associated with white-tailed deer movements
The survival of 159 yearling and adult deer (Odocoileus virginianus) was monitored by telemetry during 282 spring and 219 fall individual migrations to winter deeryards in northeastern Minnesota. A disproportionate number of deer were killed by wolves (Canis lupus) during fall migration relative to the short time they spent migrating, but not during spring migration. Predation was also significa
Authors
M.E. Nelson, L. D. Mech
Population trends from the American woodcock singing-ground survey, 1970-88
Population trend analysis of American woodcook (Scolopax minor) using data from a singing-ground survey indicates population declines throughout the breeding range of the species between 1970 and 1988. In the eastern United States and Canada, this decline has been quite consistent throughout the period, but in the central portion of the continent the population increased during the 1970's and decl
Authors
J.R. Sauer, J.B. Bortner
Eggshell modifications in captive American kestrels resulting from Aroclor 1248 in the diet
American kestrels (Falco sparverius) were fed diets containing 3 μg/g Aroclor® 1 1248 or control diets from mid-January until July. Eggs were removed from first clutches 2 to 4 days after laying ceased and shell thickness and shell dimensions were measured. Contents of the third egg of each clutch, the carcasses of all adults that received Aroclor® 1248 and of three males and three females that re
Authors
T. Peter Lowe, Rey C. Stendell