Pratt, H. M., and D. W. Winkler. 1985. Clutch size, timing of laying, and reproductive success in a colony of Great Blue Herons and Great Egrets. Auk 102: 49-63.
Pratt, H. M. 1983. Marin County California heron colonies: 1967-1981. Western Birds 14: 169-184.
Pratt, H. M. 1980. Directions and timing of Great Blue Heron foraging flights from a California colony: implications for social facilitation of food finding. Wilson Bulletin 92: 489-496.
Pratt, H. M. 1977. Great Blue Herons interrupt nest-guarding to drink. Condor 79: 501-502.
Pratt, H. M. 1974. Breeding of Great Blue Herons and Great Egrets at Audubon Canyon Ranch, California, 1972-1973. Western Birds 5: 127-136.
Pratt, H. M. 1973. Breeding attempts by juvenile Great Blue Herons. Auk 90: 897-899.
Faber, R. A., R. W. Risebrough, and H. M. Pratt. 1972. Organochlorines and mercury in Common Egrets and Great Blue Herons. Environmental Pollution 3: 111-122.
Pratt, H. M. 1972. Nesting success of Common Egrets and Great Blue Herons in the San Francisco Bay region. Condor 74: 447-453.
Pratt, H. M. 1972. Nesting success of Great Blue Herons and Common Egrets at Audubon Canyon Ranch in 1971. American Birds 26: 699-702.
Pratt, H. M. 1970. Breeding biology of Great Blue Herons and Common Egrets in Central California. Condor 72: 407-416.