Aldridge, H.D.J.N. and R.M. Brigham. 1991. Factors influencing the foraging time in two aerial insectivores; the bird, Chordeiles minor and the bat, Eptesicus fuscus. Canadian Journal of Zoology 69:62-69.
American Ornithogists' Union. 1983. Check-list of North American birds, 6th Ed. Allen Press, Inc., Lawrence, Kansas.
Bayne, E.M. and R.M. Brigham. 1995. Prey selection and foraging constraints in Common Poorwills (Phalaenoptilus nuttallii). Journal of Zoology (London) 235:1-8.
Bender, D.J. 1994. The effect of moonlight on nocturnal activity by the Common Poorwill (Phalaenoptilus nuttallii). Unpubl. Thesis, Univ. of Regina, Regina.
Bibby, C.J. and T.D. Charlton. 1991. Observations on the San Miguel Bullfinch. Açoreana 7:297-304.
Bibby, C.J., N.D. Burgess, and D.A. Hill. 1992. Bird census techniques. Academic Press, London.
Brigham, R.M. 1988. The influence of morphology, prey detection system, and prey availability on the foraging behaviour of aerial insectivores. Unpubl. PhD Thesis, York Univ., North York, ON.
Brigham, R.M. 1989. Roost and nest sites of Common Nighthawks: Are gravel roofs important? Condor 91:722-724.
Brigham, R.M. 1990. Prey selection by Big Brown Bats (Eptesicus fuscus) and Common Nighthawks (Chordeiles minor). American Midland Naturalist 124:73-80.
Brigham, R.M. 1992. Daily torpor in a free-ranging goatsucker, the Common Poorwill (Phalaenoptilus nuttallii). Physiological Zoology 65:457-472.
Brigham, R.M. 1994. Goatsuckers: Just feathered bats? Cordillera 1(2):12-17.
Brigham, R.M. and R.M.R. Barclay. 1992. Lunar influence on foraging and nesting activity of Common Poorwills (Phalaenoptilus nuttallii). Auk 109:315-320.
Buckland, S.T. 1987. On the variable circular plot method of estimating density. Biometrika 43:363-384.
Campbell, R.W., N.K. Dawe, I. McTaggart-Cowan, J.M. Cooper, G.W. Kaiser, and M.C.E. McNall. 1990. The birds of British Columbia. Vol. II. Nonpasserines. Royal British Columbia Museum, Victoria, B.C.
Canadian Wildlife Service. 1994. Canadian landbird monitoring strategy. CWS, Hull, PQ.
Cannings, R.A., R.J. Cannings, and S.G. Cannings. 1987. Birds of the Okanangan Valley. Royal British Columbia Museum, Victoria, B.C.
Cooper, R.J. 1981. Relative abundance of Georgia caprimulgids based on call-counts. Wilson Bulletin 93:363-371.
Csada, R.D. and R.M. Brigham. 1992. Common Poorwill. In: The birds of North America, No. 32, (A. Poole, P. Stettenheim, and F. Gills, eds.). The Academy of Natural Sciences, Philadelphia; The American Ornithologists Union, Washington, D.C.
Csada, R.D. and R.M. Brigham. 1994a. Breeding biology of the Common Poorwill (Phalaenoptilus nuttallii) at the northern edge of its distribution. Journal of Field Ornithology 65:186-193.
Csada, R.D. and R.M. Brigham. 1994b. Reproduction constrains the use of daily torpor by free-ranging Common Poorwills (Phalaenoptilus nuttallii). Journal of Zoology (London) 234:209-216.
Csada, R.D., R.M. Brigham, and B.R. Pittendrigh. 1992. Prey selection in relation to insect availability by the poorwill (Phalaenoptilus nuttallii). Canadian Journal of Zoology 70:1299-1303.
Firman, M.C., R.M. Brigham, and R.M.R. Barclay. 1993. Do free-ranging Nighthawks enter torpor? Condor 95:157-162.
French. A.R. 1993. Hibernation in birds: comparisons with mammals. In: Life in the cold: Ecological, physiological, and molecular mechanisms (C. Carey, G.L. Florant, B.A. Wunder, and B Horowitz, eds.). Westview Press, Boulder, CO., pp. 43-53.
Hilden, O., P. Kokimies, R. Pakarinen, and R.A. Vaisanen. 1991. Point counts of breeding landbirds. In: Monitoring bird populations, (P. Kokimies and R.A. Vaisanen, eds.). Finnish Museum of Natural History, University of Helsinki, Helsinki.
Jackson, H.D. 1994. The English names of Afrotropical Nightjars (Caprimulgidae). Ostrich 64:148-159.
Jaeger, E.C. 1948. Does the Poor-will "hibernate"? Condor 50:45-46.
Jaeger, E.C. 1949. Further observations on the hibernation of the Poor-will. Condor 51:105-109.
Kalcounis, M.C., R.D. Csada, and R.M. Brigham. 1992. The status and distribution of the Common Poorwill in the Cypress Hills, Saskatchewan. Blue Jay 50:38-44.
Kepler, C.B. and A.K. Kepler. 1973. The distribution and ecology of the Puerto Rican Whip-poor-will, an endangered species. Living Bird 12:207-239.
McNichol, M.K. 1981. Caution needed in use of playbacks to census bird populations. American Birds 35:235-236.
Ralph, C.J., G.R. Geupel, P. Pyle, T.E. Martin, and D.F. DeSante. 1993. Handbook of field methods for monitoring landbirds. General Technical Report PSW-GTR-144. Pacific Southwest Research Station, Forest Service, U.S. Dept. Agriculture, Albany, CA.
Ravenscroft, N.O.M. 1989. The status and habitat of the Nightjar Caprimulgus europaeus in coastal Suffolk. Bird Study 36:161-169.
Vilella, F.J. and P.J. Zwank. 1987. Density and distribution of the Puerto Rican Nightjar in the Guayanilla Hills. Caribbean Journal of Science 23:238-242.
Vilella, F.J. and P.J. Zwank. 1993. Geographic distribution and abundance of the Puerto Rican Nightjar. Journal of Field Ornithology 64:223-238.