_. 1939. Nesting success; its significance in waterfowl 
reproduction. Transactions of the Fourth North American 
Wildlife Conference, p. 591-604. 
(Comparative nesting success of upland ground nesters, 
species that nest largely in bushes and trees, and hole 
nesters.) 
_. 1942. Blackbirds and grain crops in the eastern United 
States. U. S. Fish and .Wildlife Service, Wildlife 
Leaflet 220, 5 p. 
Knowlten, G. F. 1944. Redwings eat pea aphids. Auk, vol. 61, 
no. 1, p. 138. 
Lindzey, J. S. 1960. Research on control of blackbird depredations. 
Transactions of the Twenty-fifth North American Wildlife 
Conference, March 7, 8, and 9, p. 116-121. 
Linford, J. H. 1938. Notes on food habits of the thick-billed 
red-winged blackbirds in Utah. Proceedings of the Utah 
Academy of Sciences, vol. 15, p. 91-92. 
Linsdale, J. M. 1936. Coloration of downy young birds and of nest 
linings. Condor, vol. 38, no. 3, p. 111-117. 
(Downy plumage and nest lining in relation to insolation.) 
_, 1938. Environmental responses of vertebrates in the Great 
Basin. American Midland Naturalist, vol. 19, no. 1, p. 1-206. 
(Behavior and biology of red-winged blackbird in breeding 
colonies in central Nevada.) 
Low, S. H. 1950. Red-winged blackbird fourteen years old. Bird- 
Banding, vol. 21, no. 3, p. 115. 
Macklin, P. R. 1958. Spittle insects as food of the red-winged 
blackbird. Auk, vol. 75, no. 2, p. 225. 
Manwell, R. D. 1941. Homing instinct of the red-winged blackbird. 
Auk, vol. 58, no. 2, p. 184-187. 
Martin, A. C., H. S. Zim, and A. L. Nelson. 1951. American wildlife 
and plants. McGraw-Hill Book Co., New York, 500 p. 
(Major plant foods of the red-winged blackbird in parts of 
the United States.) 
Mayr, E. 1941. Red-wing observations of 1940. Proceedings of the 
Linnaean Society of New York, nos. 52-53, p. 75-83. 
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