The season - July, August, September, 1970
C.S. Robbins
1970, Maryland Birdlife (26) 116-121
The season - April, May, June, 1970
C.S. Robbins
1970, Maryland Birdlife (26) 99-108
A note on the stomach contents of two whooping cranes
Francis M. Uhler, Louis N. Locke
1970, Condor (72) 246-246
On 4 January 1968 an adult female Whooping Crane (Grus americana) was illegally shot by a hunter near the Aransas National Wildlife Refuge, Texas. The carcass was immediately frozen and subsequently shipped to the Patuxent Wildlife Research Center for autopsy....
Mass movement of black fly larvae on silken threads (Diptera: Simuliidae)
I.B. Tarshis, W. Neil
1970, Annals of the Entomological Society of America (63) 607-610
Stoppage of waterflow in a stream resulted in the migration of massive numbers of black fly larvae on silken threads. Larvae were found on single silken threads, but the heaviest concentrations were on “cables” composed of 25-50 individual silken threads. The larvae were attached in concentric rings around the silken...
Organochlorine residues and autopsy data from bald eagles 1966-68
B.M. Mulhern, W. L. Reichel, L. N. Locke, T. G. Lamont, A. A. Belisle, E. Cromartie, George E. Bagley, R. M. Prouty
1970, Pesticides Monitoring Journal (4) 141-144
Sixty-nine bald eagles found moribund or dead in 25 States during 1966-68 were analyzed for pesticide residues. Residues of polychlorinated biphenyls and DDE were detected in all samples of eagle carcasses; residues of dieldrin were detected in 68 and residues of DDD in 64; DDT, heptachlor epoxide, and DCBP were...
The season - January, February, March, 1970
C.S. Robbins
1970, Maryland Birdlife (26) 68-73
Seventieth Christmas bird count. 278. Back Bay National Wildlife Refuge, Va
P.W. Sykes Jr.
1970, Audubon Field Notes (24) 212
Winter bird survey technique tested in Maryland
C.S. Robbins
1970, Maryland Birdlife (26) 11-20
An international standard for a mapping method in bird census work recommended by the International Bird Census committee
S. Svensson, K. Williamson, C. Ferry, A.H. Joensen, D. Lea, H. Oelke, C.S. Robbins
1970, Audubon Field Notes (24) 722-726
Challenge infection as a means of determining the rate of disease resistant Trichomonas gallinae-free birds in a population
R. M. Kocan, J.O. Knisley
1970, Journal of Wildlife Diseases (6) 13-15
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....
Active anting in the Puerto Rican tanager
W.B. King, C. B. Kepler
1970, The Auk (87) 376-378
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 hoop-net trap for passerine birds--additional comments
E.B. Baysinger
1970, Bird-Banding (41) 311-311
No abstract available....
Organochlorine pesticide residues in whooping cranes and Everglade kites
Thair Lamont, William L. Reichel
1970, The Auk (87) 158-159
Three Whooping Cranes (Grus americana), two Everglade Kites (Rostrhamus sociabilis), and one kite egg were analyzed for pesticide residues at this laboratory. This is the first time that specimens from this rare population from the wild have ever been analyzed, and the results are herein reported....
Soil-food chain-pesticide wildlife relationships in aldrin-treated fields
L.J. Korschgen
1970, Journal of Wildlife Management (34) 186-199
Soil-food-chain-pesticide wildlife relationships were investigated to learn the concentration of pesticide residues present in soils, macro-invertebrates, vertebrates, and seeds as a result of annual applications of aldrin at recommended rates for pest control. Two central Missouri cornfields treated with aldrin at 1 lb/acre, for 16 and 15 of the past...
Records of the brambling in North America
Richard C. Banks
1970, The Auk (87) 165-167
A Brambling, Fringella montifringella, was seen regularly in Portland, Oregon, from 22 November 1967 to 3 April 1968 and photographed by many people. First discovered at a feeder in the northeast section of the city by Jeff Gilligan and Ron Klein, from January on it was a daily visitor to...
Measurements of brown pelican eggshells from Florida and South Carolina
L. J. Blus
1970, BioScience (20) 867-869
No abstract available....
Organochlorine insecticide residues in soils and soil invertebrates from agricultural lands
C.D. Gish
1970, Pesticides Monitoring Journal (3) 241-252
Soils and earthworms and other soil invertebrates were collected from 67 agricultural fields in eight States. Samples were analyzed by gas chromatography for DDE, DDD, DDT, aldrin, dieldrin, endrin, heptachlor, heptachlor epoxide, and gamma-chlordane insecticides. Organochlorine insecticides in soils averaged 1.5 ppm, dry weight, and in earthworms, 13.8...
Whistling swans breeding on the northwest coast of New Quebec
J.D. Heyland, E.B. Chamberlain, C.F. Kimball, D.H. Baldwin
1970, Canadian Field-Naturalist (84) 398-399
No abstract available....
Bronzed cowbird taken in Florida
R.E. Matteson
1970, The Auk (87) 588-588
On 8 November 1968 in Gainesville, Florida, I removed a male Bronzed Cowbird (Tangavius a. aeneus) from a blackbird decoy trap containing a large number of Brown-headed Cowbirds (Malothrus ater). Oliver L. Austin, Jr., at the Florida State Museum, verified the species identification by noting the notched inner webs of...
Head-scratching method of the Swainson's warbler
Brooke Meanley
1970, The Auk (87) 163-163
Ficken and Ficken (Auk, 85: 136, 1968) suggest that the "Head-scratching method may prove a valuable addition to the set of complex characters that can be used in defining genera," and that field observers should continue to fill gaps in our knowledge of this behavior. In the course of a...
Bird records from southern Nevada
R.C. Banks, C.G. Hansen
1970, Condor (72) 109-110
No abstract available....
Re-evaluation of two supposed hybrid birds
R.C. Banks
1970, The Wilson Bulletin (82) 331-332
Incidence of malaria in a wintering population of canvasbacks (Aythya valisineria) on Chesapeake Bay
R. M. Kocan, J.O. Knisley
1970, Journal of Wildlife Diseases (6) 441-442
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....
Method of searching for food by the Swainson's warbler
B. Meanley
1970, The Wilson Bulletin (82) 228
The types and taxa of Harold H. Bailey
R.C. Banks, J.P. Hubbard
1970, Proceedings of the Biological Society of Washington (83) 321-332