Fourteenth breeding-bird census. 22. General farm land
R. E. Stewart, M.B. Meanley
1950, Audubon Field Notes (4) 305
Preliminary map showing the winter distribution of the clapper rail (Rallus longirostris subsp.) in the United States
C.S. Robbins
1950, Audubon Field Notes (4) 307
Black vultures in western Pennsylvania
C.S. Robbins
1950, The Wilson Bulletin (62) 36
Phosphorus poisoning in waterfowl
D. R. Coburn, J.B. DeWitt, J.V. Derby Jr., E. Ediger
1950, Journal of the American Pharmaceutical Association, Scientific Edition (39) 151-158
Black ducks and mallards were found to be highly susceptible to phosphorus poisoning. 3 mg. of white phosphorus per kg. of body weight given in a single dose resulted in death of a black duck in 6 hours. Pathologic changes in both acute and chronic poisoning were studied. Data are...
DDT: Its effects on beneficial life
J.P. Linduska
1950, Garden Club of America Bulletin (38) 76-82
Fiftieth Christmas bird count. A summary of largest counts of individuals
C.S. Robbins
1950, Audubon Field Notes (4) 179-182
Definite common names for species--an editorial policy
J.W. Aldrich
1950, Audubon Field Notes (4) 36-39
Sportsmen: Are you being shortchanged?
D.L. Allen
1950, Outdoor Life (106) 64-65
Island pheasant festival
D.L. Allen
1950, Outdoor Life (105) 34
Fantastic shooting, full bags are a joy to sportsmen, and a boon to researchers trying to find out what makes Pelee tick. [Pelee is a Canadian island in Lake Erie, 20 miles north of Sandusky, OH.]...
Notes on some winter birds of north central New Mexico
R. W. Allen
1950, The Auk (67) 252-253
The observations recorded below were made in Santa Fe, Sandoval and Rio Arriba counties during the winter of 1939-1940. Occasional specimens, 54 in all, collected for racial identification, are deposited in the Museum of Zoology, University of Michigan....
Waterfowl habitat improvement on Reelfoot Lake
J.H. Steenis
1950, Journal of the Tennessee Academy of Science (25) 56-64
The changing seasons. A summary of the nesting season
C.S. Robbins
1950, Audubon Field Notes (4) 263-264
The season--May, June, July, and August 1950
C.S. Robbins
1950, Maryland Birdlife (6) 47-52
The season--September and October 1950
C.S. Robbins
1950, Maryland Birdlife (6) 55-58
A rare color phase of the song sparrow
E. Arnold, S.H. Low
1950, Atlantic Naturalist (6) 23
Snowy owls were recorded on 58 Christmas counts this year [map]
C.S. Robbins
1950, Audubon Field Notes (4) 65
The fabulous whistlepig
D.L. Allen
1950, Sports Afield (123) 28, 78-80
Rodent repellency
J.B. DeWitt, J.F. Welch, E. Bellack
1950, Modern Packaging (23) 123-126
In the course of studies involving more than 2,500 chemical repellents, it has been found that certain groups of- compounds containing nitrogen or sulfur are repellent to rats under the , test conditions and it appears probable that some of these compounds might be used for the protection of packaged...
Preliminary map showing the winter distribution of the king rail (Rallus elegans elegans)
C.S. Robbins
1950, Audubon Field Notes (4) 308
Quail studies on a river floodplain
W. Rosene
1950, Journal of Soil and Water Conservation (5) 11-114
Hawks over Maryland, fall of 1949
C.S. Robbins
1950, Maryland Birdlife (6) 2-11
Distribution of North American birds: Winter distribution of the sora
C.S. Robbins
1950, Audubon Field Notes (4) 40
The changing seasons: A summary of the spring migration
C.S. Robbins
1950, Audubon Field Notes (4) 231-233
The genus Acroricnums in America (Hymenoptera, Ichneumonidae)
R.T. Mitchell
1950, Annals of the Entomological Society of America (43) 249-261
This paper is a revision of the known species of A croricnus of America. Of the five previously described species assigned to this genus from this area, four are reduced to subspecific rank under the European genotype, A croricnus stylator (Thunberg). Three subspecies and one species are described as new, and typical stylator is recorded from...
Red-winged blackbird fourteen years old
S.H. Low
1950, Bird-Banding (21) 115-115
No abstract available. ...