Part 13

KLUIJVER, H. N.

1951. The population ecology of the great tit, Parus m. major L. Ardea, 39:1-135.

LACK, D.

1947. The significance of clutch-size. Ibis, 89:302-352.

LAWRENCE, L. DE K.

1953. Nesting life and behavior of the Red-eyed Vireo. Can. Field-Nat., 67:46-77.

LEWIS, H. F.

1921. A nesting of the Philadelphia Vireo. Auk, 38:26-44, 185-202.

LINSDALE, J. M.

1928. Birds of a limited area in eastern Kansas. The Univ. of Kansas, Sci. Bull., 18:11:517-626.

LLOYD, W.

1887. Birds of Tom Green and Concho Counties, Texas. Auk, 4:181-193, 289-299.

MORRIS, D.

1956. The feather postures of birds and the problem of the origin of social signs. Behaviour, 9:75-113.

MOYNIHAN, M.

1955. Types of hostile display. Auk, 72:247-259.

MUMFORD, R. E.

1952. Bell's Vireo in Indiana. Wilson Bull., 64:224-233.

NICE, M. M.

1929. The fortunes of a pair of Bell Vireos. Condor, 31:13-20.

1943. Studies in the life history of the song sparrow. II. The behavior of the song sparrow and other passerines. Trans. Linn. Soc. N.Y., 6:328 pp.

1954. Problems of incubation periods in North American birds. Condor, 56:173-197.

NOLAN, V.

1960. Breeding behavior of the Bell Vireo in southern Indiana. Condor, 62:225-244.

PITELKA, F. A.

1959. Numbers, breeding schedule, and territoriality in Pectoral Sandpipers of northern Alaska. Condor, 61:223-264.

PITELKA, F. A., and KOESTNER, E. J.

1942. Breeding behavior of Bell's Vireo in Illinois. Wilson Bull., 54:97-106.