The breeding ecology of sea birds on Monito Island, Puerto Rico
C. B. Kepler
1978, Condor (80) 72-87
Monito Island, a 15-ha plateau surrounded by steep undercut cliffs, lies halfway between Puerto Rico and the Dominican Republic. Seven of the 9 sea birds are known to breed, and 2 (Blue-faced Booby and Laughing Gull) are here recorded as breeders in Puerto Rico for the first time....
The changing seasons: An analytical summary of Spring Migration, 1978, in North America with a provocative consideration of the evolutionary impact of avian vagrancy
M.A. Howe
1978, American Birds (32) 968-976
The effects of ingested petroleum on oviposition and some aspects of reproduction in experimental colonies of mallard ducks (Anas platyrhynchos)
W. N. Holmes, K.P. Cavanaugh, J. Cronshaw
1978, Journal of Reproduction and Fertility (54) 335-347
Compared to unmated mallard ducks fed an uncontaminated diet, unmated birds given food contaminated with 3 ml South Louisiana crude oil per 100 g dry weight showed an 84% decline in the daily rate of oviposition, a 33% decrease in egg-shell thickness and at autopsy more than 82% of the...
Toxicity of experimental lead-iron shot versus commercial lead shot in mallards
Mack T. Finley, Michael P. Dieter
1978, Journal of Wildlife Management (42) 32-39
The toxicity of an experimental lead-iron shot containing 38.1 percent lead was compared with commercial lead shot in mallard ducks (Anas platyrhynchos) fed corn for 14 weeks. Significantly higher mortality occurred in ducks dosed with commercial lead shot compared to ducks given lead-iron shot containing comparable amounts of lead. Loss...
Bald eagles nesting in Baja California
Charles J. Henny, Daniel W. Anderson, C.E. Knoder
1978, The Auk (95) 424-424
Published records of Bald Eagles (Haliaeetus leucocephalus) nesting in Baja California during the last 50 years are nonexistent to our knowledge, and few records exist prior to that time. Friedmann et al. (1950:61, Pac. Coast Avifauna 29) describe the distribution of Bald Eagles in Baja California as "a scattering of...
Survival and reproductive success of black ducks fed methyl mercury
M. T. Finley, Rey C. Stendell
1978, Environmental Pollution (16) 51-64
A diet containing 3 ppm mercury was fed to black ducks (Anas rubripes) for periods of 28 weeks during two consecutive breeding seasons. Clutch size, egg production, number of eggs incubated, hatchability and survival of ducklings were lower during both years in hens fed mercury. Reduced hatchability and poor duckling...
A white-tailed kite breeding record for Oregon
Charles J. Henny, John T. Annear
1978, Western Birds (9) 131-133
No abstract available....
Management and research needs for urban wildlife
A. D. Geis
1978, Proceedings of the Annual Convention of the International Association of Fish and Wildlife Agencies (68) 40-45
Osprey distribution, abundance, and status in western North America: II. The Oregon population
Charles J. Henny, J.A. Collins, W.J. Deibert
1978, Murrelet (59) 14-25
No abstract available. ...
Osprey distribution, abundance, and status in western North America: I. The northern California population
Charles J. Henny, David J. Dunaway, Robert D. Mallette, James R. Koplin
1978, Northwest Science (52) 261-271
An estimated 355± 40 pairs (95 percent C.I.) of Ospreys (<i>Pandion haliaetus carolinensis</i>) nested in the northern California survey area in 1975. Eighty-one pairs were estimated along the extreme northern coast in Del Norte and Humboldt Counties. One hundred and forty-four pairs were estimated along California's northern coast in...
Howling at two Minnesota wolf pack summer homesites
F.H. Harrington, L.D. Mech
1978, Canadian Journal of Zoology (56) 2024-2028
Howling sessions were monitored at two Minnesota wolf pack homesites for 2255 h between 29 April and 3 August 1973. All sessions recorded occurred from dusk through early morning, with an evening peak for one pack. Within a night, multiple sessions were grouped temporally, most occurring within an hour of...
Uptake of dietary PCB by pregnant big brown bats (Eptesicus fuscus) and their fetuses
D. R. Clark Jr.
1978, Bulletin of Environmental Contamination and Toxicology (19) 707-714
In a previous study (CLARK and LAMONT 1976), 26 pregnant big brown bats were captured, caged, and fed uncontaminated mealworms until their litters were born. Immediately after parturition, female bats and litters were frozen. Five litters included at least one dead young, and these five litters contained significantly more of...
Variation in reproductivity with age in the brown pelican
Lawrence J. Blus, Julie A. Keahey
1978, The Auk (95) 128-134
About 10% of the Brown Pelicans breeding in South Carolina are in immature plumage. In comparison to adult breeders, immatures nested later, laid a smaller clutch, nested more frequently in low ground that was flooded, lost a larger proportion of nestlings, and produced fewer downy young per nest. Factors such...
Avian cholera and organochlorine residues in an American oystercatcher
L. J. Blus, L. N. Locke, E. Cromartie
1978, Estuaries (1) 128-129
Pasteurella multocida, the causative bacterium of avian cholera, was isolated from cultures of the liver and heart blood of a female, adult American oystercatcher (Haematopus palliatus) found dead on the Cape Romain National Wildlife Refuge, South Carolina, in May 1973. This is apparently the first record of avian cholera in...
Six different plasma enzymes in bald eagles (Haliaeetus leucocephalus) and their usefulness in pathological diagnosis
M. P. Dieter, Stanley N. Wiemeyer
1978, Comparative Biochemistry and Physiology, Part C: Comparative Pharmacology (61) 153-155
1. Activities of creatine phosphokinase, glutamic oxalacetic transaminase, glutamic pyruvic transaminase, lactate dehydrogenase, fructose diphosphate aldolase and cholinesterase were measured in plasma of bald eagles.2. There were no sex differences in the plasma enzyme activities.3. An acute dieldrin dosage (10 mg/kg) of a female bald eagle resulted in 400% increases...
Dieldrin-induced mortality in an endangered species, the gray bat (Myotis grisescens)
D. R. Clark Jr., R. K. LaVal, D. M. Swineford
1978, Science (199) 1357-1359
Brains of juvenile gray bats, Myotis grisescens, found dead beneath maternity roosts in two Missouri caves contained lethal concentrations of dieldrin. One colony appeared to be abnormally small, and more dead bats were found a year after the juvenile bats had been collected. This is the first report to link the...
Organochlorine residues and reproduction in the little brown bat, Laurel, Maryland - June 1976
D. R. Clark Jr., A. J. Krynitsky
1978, Pesticides Monitoring Journal (12) 113-116
Twelve of 43 pregnant little brown bats (Myotis lucifugus) collected at Montpelier Barn, Laurel, Maryland, gave birth to dead young. Eleven of these 12 dead neonates were abnormally small. Most of the stillbirths were attributable to unknown reproductive difficulties associated with first pregnancies, but four may have been due to...
Characteristics of woodcock hunters and woodcock harvest in Pennsylvania
R.A. Coon, J.S. Lindzey, J.L. George
1978, Proceedings Northeast Fish and Wildlife Conference (35) 185-194
Nomenclature of the black-bellied whistling-duck
Richard C. Banks
1978, The Auk (95) 348-352
There are two distinguishable subspecies of the Black-bellied Whistling-Duck, one in South America to eastern Panama and one from western Panama through Central America to the southernmost United States. The type locality of the species is the West Indies, but there is little evidence that birds from that area are...
Prealternate molt in nuthatches
Richard C. Banks
1978, The Auk (95) 179-181
Nuthatches of the genus Sitta constitute one of the passerine groups in which prealternate (prenuptial) molt is generally believed not to occur. Dwight (1900: 298) discussed this genus with the family Paridae and stated: "All the members of this family have only the annual moult. They are peculiar in assuming...
A new hybrid warbler combination
R.C. Banks, J. Baird
1978, The Wilson Bulletin (90) 143-144
Studies on combined effects of organophosphates or carbamates and morsodren in birds. II. Plasma and cholinesterase in quail fed morsodren and orally dosed with parathion or carbofuran
M. P. Dieter, J. Larry Ludke
1978, Bulletin of Environmental Contamination and Toxicology (19) 389-395
The degree of interaction between mercury and cholinesterase inhibiting pesticides was determined by comparing enzyme responses to sublethal dosages of parathion or carbofuran in quail fed 0.05, 0.5, or 5.0 ppm morsodren for 18 weeks. A statistically significant interaction was defined as greater brain cholinesterase inhibition in morsodren-fed than in...
Mexican nesting records for the American bittern
R.C. Banks, R.W. Dickerman
1978, Western Birds (9) 130
Biological perspectives for the mourning dove call-count survey
T.S. Baskett, M.J. Armbruster, M. W. Sayre
1978, Transactions of the North American Wildlife and Natural Resources Conference (43) 163-180
The seventy-eighth Audubon Christmas bird count. Delaware, Maryland, D.C., Virginia
D. Bystrak
1978, American Birds (32) 428-429
