HICKEY, JOSEPH J. 
1951. Mortality records as indices of migration in the mallard. 
The Condor, 53(6):28)-297. 
HICKEY, JOSEPH J. and ROBERT P. ALLEN. 
1938. First sight-recoveries of marked herring gulls. Bird- 
Banding, 9(1):S1—5h. 
HILL, J. A. 
1936. United States life tables / 1929 to 1931, 1920 to 1929, 
1919 to 1921, 1909 to 1911, 1901 to 1910, 1900 to 1902. 
Washington: Dept. of Commerce, Bur. of the Census. vi + 57pp. 
HOCKBAUM, H. ALBERT 
194. The canvasback on a prairie marsh. Washington: Amer. 
Wildl. Inst. xii + 20lpp. 
1946. Recovery potentials in North American waterfowl. Trans. 
Eleventh No. Amer. Wildl. vanes pp.403-16. 
HUHN, E. 0. 
1948. Mortality of adult end young mallards. Brit. Birds, 
41(8)s233-235. 
HOWELL, ARTHUR H. 
1932. Florida bird life. Tallahasshee: Fla. Dept. of Game 
and Fresh Water Fish in coop. with Bur. Biol. Surv., U. S. 
Dept. Agric. xxiv.+ 579pp. 
KALMBACH, E. Re 
1937. Crow-waterfowl relationships. U.S. Dept. Agric. 
Circular No. 4,33, 35pp. 
1938. A comparative study of nesting waterfowl on the Lower 
Souris Refuge: 1936-1937. Trans. Third No. Amer. Wildl. 
Conf., pp.610-623. 
KENDEIGH, S. CHARLES 
193. The role of environment in the life of birds. Ecol. 
Mono., 4(3)2299=-17. 
KLUIJVER, H. N. 
1935. Waarnemingen over de levenswijze van den Spreeuw 
(Sturnus v. yulgerls L.) met behulp van geringde individuen. 
A Ga, “Ese ® 
KORTLANDT, A. 
192. *Levensloop, samenstelling en structur der Nederlandse 
aalscholverbevolking / Een diersociologisch-geographisch 
onderzoek. Ardea, 31(3-l):175-280. 
KRAAK, W. K., G. L. RINKEL, and J. HOOGERHEIDE 
1940. Oecologische bewerking van de Europese ringgegevens van 
de Kievit (Yanellus vanellus (L.)). Ardea, 29(2-3):151-175. 
170 
