Our Living Resources — Binls 



6.5 



References 



Alexander. S,A., R.S. Ferguson, and K.J. McComiick. 

 1991. Key migratory bird terrestrial habitat sites in the 

 Northwest Territories. 2nd ed. Canadian Wildlife Ser\ ice 

 Occasional Papers 7 1 . Ottawa. Canada. 1 84 pp. 



Andres. B.A. 1994. Coastal zone use by postbreeding shore- 

 birds in northern Alaska. Journal of Wildlife 

 Management .SS:206-213. 



AOU. 198.^. Check-list of North Ameiican birds. 6th ed. 

 .American Ornithologists' Union. Washington. DC. 877 



PP 



Bailey. R.G. 1978. Description of the ecoregions of the 

 United Slates. U.S. Forest Service, Intermountain 

 Region, Ogden, UT. 77 pp. 



Bailey, R.G. 1989. E.xplanatory supplement to ecoregions of 

 the continent. Environmental Conservation l6:.^07-,^09. 



Blanco, D., R. Banchs, R Canevari, and M. Oesterheld. 

 199,^. Critical sites for the Eskimo curiew {Nuinenius 

 borealis). and other Nearctic grassland shorebirds in 

 Argentina and Uruguay, U,S, Fish and Wildlife Service 

 and Wetlands for the Americas, Manomet, MA. 89 pp. 

 Unpublished report. 



Bucher, E.H., and M. Nores. 1988. Present status of birds in 

 steppes and sa\'annas of northern and central Argentina. 

 International Council for Bird Preservation Tech. Publ. 

 7:71-79. 



Gill. R.E.. Jr.. and CM. Handel. 1981. Shorebirds of the 

 eastern Bering Sea. Pages 719-738 in D.W. Hood and 

 J. A. Calder, eds. The eastern Bering Sea shelf: oceanog- 

 raphy and resources. Vol. 2. University of Washington 

 Press, Seattle. 



Gill, R.E.. Jr.. and CM. Handel. 1990. The importance of 

 subarctic intertidal habitats to shorebirds: a study of the 

 central Yukon-Kuskokwim Delta, Alaska. Condor 

 92:702-725. 



Gill, R.E., Jr., R.L. Lanctot, J. Mason, and CM. Handel. 

 1991. Observations on habitat use, breeding chronology 

 and parental care in bristle-thighed curlews on the 

 Seward Peninsula, Alaska. Wader Study Group Bull. 

 61:28-36. 



Gill, R.E.. Jr., and R.L. Redmond. 1992. Distribution, num- 

 bers, and habitat of bristle-thighed curlews Numeuius 

 tcthitiensis on Rangiroa Atoll. Notomis 39:17-26. 



Godfrey. WE. 1987. Birds of Canada. National Museum of 

 Canada Bull. 203. Ottawa. 595 pp. 



Gollop, J.B., T.W. Ben^', and E.H. Iverson. 1986. Eskimo 

 curlew: a vanishing species? Saskatchewan Natural 

 History Society Special Publ. 17. 160 pp. 



Goss-Custard, J.D., and M.E. Moser. 1988. Rates of change 

 in the numbers of dunlin. Calidris alpina. wintering in 

 British estuaries in relation to the spread of Spariina 

 angelica. Journal of Applied Ecology 25:95-109. 



Haig, S.M. 1992. Piping plover. //? A. Poole, P. Stettenheim, 

 and F. Gill, eds. The birds of North America. No. 2. 

 Academy of Natural Sciences. Philadelphia, and 

 American Ornithologists' Union, Washington, DC. 



Handel, CM., and CP. Dau. 1988. Seasonal occurrence of 

 migrant whimbrels and bristle-thighed curlews on the 

 Yukon-Kuskokwim Delta, Alaska. Condor 90:782-790. 



Handel, CM., and R.E. Gill, Jr. 1992a. Breeding distnbu- 

 tion of the black tumstone. Wilson Bull. 104:122-135. 



Handel, CM., and RE. Gill. Jr. 1992b. Roosting behavior 

 of premigratory dunlins Calidris alpina. Auk 109:57-72. 



Hayman, R, J. Marchant. and T. Prater. 1986. Shorebirds: 

 an identification guide to the waders of the world. 

 Houghton Mifflin. Boston, MA. 412 pp. 



Howe, M.A., PH. Geissler. and B.A. Hamngton. 1989. 

 Population trends of North .American shorebirds based 

 on the International Shorebird Survey. Biological 

 Conservation 49: 1 85- 1 99. 



Jehl, J.R.. Jr. 1988. Biology of the eared grebe and Wilson's 

 phalarope in the non-breeding .season: a study of adapta- 

 tions to saline lakes. Studies in Avian Biology 12. 



Knopf, F.L. 1994. Avian assemblages on altered grasslands. 

 Studies in Avian Biology 15:247-257. 



Marks. J.S. 1993. Molt of bristle-thighed curiews in the 

 northwestern Hawaiian Islands. Auk 1 10:573-587. 



Marks, J.S., R.L. Redmond, R Hendricks, R.B. Clapp, and 

 R.E. Gill, Jr 1990. Notes on longevity and flightlessness 

 in bristle-thighed curiews. Auk 107:779-781. 



Morrison, R.LG., C Downes. and B. Collins. 1994. 

 Population trends of shorebirds on fall migration in east- 

 em Canada. 1974-1991. Wilson Bull. 106:431-447. 



Momson. R.LG., and J. P. Myers. 1989. Shorebird tJyways 

 in the New World. Pages 85-96 in H. Boyd and J.-Y. 

 Pirot. eds. Flyways and reserve networks for waterbirds. 

 Special Publ. 9. International Waterfowl and Wetlands 

 Research Bureau, Slimbridge, U.K. 



Moser, M.E. 1988. Limits to the numbers of grey plovers 

 Plurialis squatarola wintering in British estuaries: an 

 analysis of long-term population trends. Journal of 

 Applied Ecology 25:473-485. 



National Geographic Society. 1987. A field guide to the 

 birds of North America. National Geographic Society, 

 Washington, DC. 464 pp. 



Page. G.W., and R.E. Gill, Jr. 1994. Shorebirds in western 

 North America: late 1800s to late 1900s. Studies in 

 Avian Biology 15:147-160. 



Page, G.W., WD. Shuford. J.E. Kjelmyr. and L.E. Stenzel. 

 1992. Shorebird numbers in wetlands of the Pacific 

 Flyway: a summary of counts from April 1988 to 

 January 1992. Point Reyes Bird Observatory, Stinson 

 Beach, CA. 42 pp. Unpublished report. 



Page, G.W., and L.E. Stenzel, eds. 1981. The breeding sta- 

 tus of the snowv plover in California. Western Birds 

 12:1-40. 



Page. G.W.. L.E. Stenzel, W.D. Shuford. and CR. Bmce. 

 1991. Distribution and abundance of the snowy plover on 

 its western North American breeding grounds. Journal of 

 Field Ornithology 62:245-255. 



Paulson, D. 1993. Shorebirds of the Pacific Northwest. 

 University of Washington Press, Seattle. 406 pp. 



Robbins, C.S., B. Bmun. and H.S. Zim. 1983. Birds of 

 North America: a guide to field identification. Golden 

 Press. New York. 360 pp. 



Robbins, C.S., D. Bystrak. and PH. Geissler. 1986. The 

 Breeding Bird Survey: its first fifteen years, 1965-1979. 

 U.S. Fish and Wildlife Service Re-sour. Publ. 157. 196 pp. 



Skagen, S.K., and F.L. Knopf. 1993. Toward conservation 

 of niidcontinental shorebird migrations. Conservation 

 Biology 7:533-541. 



For further information: 



Robert E. Gill, Jr, 



National Biological Service 



Alaska Science Center 



1011 E. Tudor Rd. 

 Anchorage. AK 99503 



Raptors, or birds of prey, which include the 

 hawks, falcons, eagles, vultures, and owls, 

 occur throughout North American ecosystems. 

 As predators, most of them kill other verte- 

 brates for their food. Compared to most other 

 animal groups, birds of prey naturally exist at 

 relatively low population levels and are widely 

 dispersed within their habitats. The natural 

 scarcity of raptors, combined with their ability 



to move quickly, the secretive behavior of many 

 species, and the difficulties of detecting them in 

 rugged terrain or vegetation, all make determin- 

 ing their population status difficult. 



As top predators, raptors are key species for 

 our understanding and conservation of ecosys- 

 tems. Changes in raptor status can reflect 

 changes in the availability of their prey species, 

 including population declines of mammals. 



Raptors 



by 



Mark R. Fuller 



Charles J. Henny 



Petra Bohall Wood 



National Biological Service 



