Grinnell, J. 



1931. Some angles in the problem of bird migration. Auk 48: 22-32. 

 Gross, A. 0. 



1927. The Snowy Owl migration of 1926-27. Auk 44: 479-493. 



1947. Cyclic invasions of the Snowy Owl and the migration of 1945-46. Auk 64(4): 

 584-601. 



Gwynn, A. M. 



1968. The migration of the Arctic Tern. Aust. Bird Bander 6(4): 71-75. 

 Haartman, L. von. 



1968. The evolution of resident vs. migratory habit in birds: some considerations. 

 Ornis Fenn. 45(1): 1-7. 



Hagar, J. A. 

 1966. Nesting of the Hudsonian Godwit at Churchill, Manitoba. Living Bird 5: 5-43. 



Hamilton, W. J. III. 

 1962a. Bobolink migratory pathways and their experimental analysis under night 



skies. Auk 79(2): 208-233. 

 1962b. Celestial orientation in juvenile waterfowl. Condor 64(1): 19-23. 



Harrisson, T. H. 

 1931. On the normal flight speed of birds. Br. Birds 25: 86-96. 



Hassler, S. S., R. R. Graber and F. C. Bellrose. 



1963. Fall migration and weather: a radar study. Wilson Bull. 75: 56-77. 

 Haugh, J. R. and T. J. Cade. 



1966. The spring hawk migration around the southeastern shore of Lake Ontario. 

 Wilson Bull. 78(1): 88-110. 



Hebrard, J. J. 



1971. The nightly initiation of passerine migration in spring: a direct visual study. 

 Ibis 113(1): 8-18. 



Hochbaum, H. A. 



1955. Travels and traditions of waterfowl. Univ. of Minn. Press, Minneapolis. 301 p. 

 Hofslund, P. B. 



1965. Hawks above Duluth. In: The bird watcher's America, ed. 0. s. Pettingill, Jr. 

 McGraw-Hill Book Co., N. Y. 



1966. Hawk migration over the western tip of Lake Superior. Wilson Bull. 78: 79-87. 

 Hussell, D. J. T., T. Davis and R. D. Montgomerie. 



1967. Differential fall migration of adult and immature Least Flycatchers. Bird- 

 Banding 38(1): 61-66. 



Jaeger, E. C. 



1948. Does the Poor-will "hibernate"? Condor 50: 45. 



1949. Further observations on the hibernation of the Poor-will. Condor 51: 105-109. 

 Johnson, N. K. 



1963. Comparative molt cycles in the Tyrannid genus Empidonax. Proc. XIII Int. 



Ornithol. Congr.: 870-883. 

 1973. S pring migration of the Western Flycatcher with notes on seasonal changes in 



sex and age ratios. Bird-Banding 44(3): 205-220. 

 Keeton, W. T. 



1969. Orientation by pigeons: is the sun necessary? Science (Wash., D. C.) 165(3896): 

 922-928. 



Kenyon. K. W. and D. W. Rice. 

 1958. Homing of Laysan Albatrosses. Condor 60: 3-6. 



107 



