A skewed sex ratio in Northern Goshawks: Is it a sign of a stressed population?

Journal of Raptor Research

Volumn 39, Issue 3, 2005, Pages 247-252

  Ingraldi, Michael F ^a  

^a ARIZONA GAME AND FISH DEPARTMENT   (United States)

Author keywords

Accipiter gentilis; Nestling; Northern Goshawk; Sex allocation; Sex ratio

Indexed keywords

ENVIRONMENTAL STRESS; RAPTOR; SEX ALLOCATION; SEX RATIO; SKEWNESS;

ARIZONA; NORTH AMERICA; UNITED STATES;

ACCIPITER GENTILIS;

EID: 28344448594     PISSN: 08921016     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (38)

1. Anderson, D.J., J. Reeve, J.E.M. Gomez, W.W. Weathers, S. Hutson, H.V. Cunningham, and D.M. Bird. 1993. Sexual size dimorphism and food requirements of nestling birds. Canadian J. Zoology 71:2541-2545.
2. Avian Biotech Iinternational, 2005. Avian Biotech International, Tallahassee, FL U.S.A.
3. Balfour, E. and C.J. Cadbury. 1979. Polygyny, spacing, and sex ratio among Hen Harriers Circus cyaneus in Orkney, Scotland. Ornis Scandinavica 10:133-141.
4. Bednarz, J.C. and T.J. Hayden. 1991. Skewed brood sex ratio and sex biased hatching sequence in Harris's Hawks. Am. Nat. 137:116-132.
5. Boal, C. 1994. A photographic and behavioral guide to aging nestling Northern Goshawks. Stud. Avian Biol. 16:32-40.
6. Boal, C. and R.W. Mannan. 1994. Northern Goshawk diets in ponderosa pine forests on the Kaibab Plateau. Stud. Avian Biol. 16:97-102.
7. Boal, C. and D.E. Andersen, and P.L. Kennedy. 2005. Productivity and mortality of Northern Goshawks in Minnesota. J. Raptor Res. 39:222-228.
8. Bortolotti, G.R. 1986. Influence of sibling competition on nestling sex ratios of sexually dimorphic birds. Am. Nat. 127:495-507.
9. Brown, D.E. 1994. Biotic communities: southwestern United States and northwestern Mexico. Univ. Utah Press, Salt Lake City, UT U.S.A.
10. Charnov, E.L. 1982. The theory of sex allocation. Princeton Univ. Press, Princeton, NJ U.S.A.
11. Clark, A.B. 1978. Sex ratio and local resource competition in a prosimian primate. Science 201:163-165.
12. Clutton-Brock, T.H. 1986. Sex ratio variation in birds. Ibis 128:317-329.
13. Clutton-Brock, T.H., S. Albon, and F.E. Guinness. 1985. Parental investment and sex differences in juvenile mortality in birds and mammals. Nature 313:131-133.
14. Cronmiller, J.R. and C.R. Thompson. 1981. Sex ratio adjusurrent in malnourished Red-winged Blackbird broods. J. Field Ornith. 52:65-67.
15. Edwards, T.C., Jr., M.W. Collopy, K. Steenhof, and M.N. Kochert. 1988. Sex ratios of fledgling Golden Eagles. Auk 105:793-796.
16. Fisher, R.A. 1930. The genetical theory of natural selection. Oxford Univ. Press, Oxford, U.K.
17. Fridolfsson, A.K. and H. Ellegren. 1999. A simple and universal method for molecular sexing of non-ratite birds. J. Avian Bio. 30:116-121.
18. Griffiths, R., M.C. Double, K. Orr, and R.J.G. Dawson. 1998. A DNA test to sex most birds. Molecular Ecology 7: 1071-1075.
19. Hiraldo, F., J.P. Veiga, and M. Manez. 1990. Growth of nestling Black Kites Milvus migrans. effects of hatching order, weather and season. J. Zool. Soc. Lond. 222:197-214.
20. Howe, H.F. 1977. Sex-ratio adjustment in the Common Grackle. Science 198:744-746.
21. Kostrzewa, A. and R. Kostrzewa. 1990. The relationship of spring and summer weather with density and breeding performance of the buzzard Buteo buteo, goshawk Accipiter gentilis and kestrel Falco tinnunculus. Ibis 132:550-559.
22. Lee, J.A. 1980. Survival of the smallest nestling in goshawks. J. Raptor Res. 14:70-72.
23. Leroux, A. and V. Bretagnolle. 1996. Sex ratio variations in broods of Montagu's Harriers Circus pygargus. J. Avian Biol. 27:63-69.
24. Meyers, J.H. 1978. Sex ratio adjustments under food stress: maximization of quality or numbers of offspring? Am. Nat. 112:381-388.
25. Newton, I. 1979. Population ecology of raptors. Buteo Books, Vermillion, SD U.S.A.
26. Olsen, P.D. and A. Cockburn. 1991. Female-biased sex allocation in Peregrine Falcons and other raptors. Behav. Ecol. Sociobiol. 28:417-423.
27. Palmer, R.S. 1988. Handbook of North American birds. Vol. 4. Diurnal raptors. Yale University Press, New Haven, CT U.S.A.
28. Reynolds, R.T. and S.M. Joy. 1998. Distribution, territory occupancy, dispersal, and demography of Northern Goshawks on the Kaibab plateau, Arizona. Final Rep. Heritage Project No. 194045, Arizona Game and Fish Dept., Phoenix, AZ U.S.A.
29. Rosenfield, R.N., J. Bielefeldt, and S.M. Vos. 1996. Skewed sex ratios in Cooper's Hawk offspring. Auk 113:957-960.
30. Sheldon, B.C., J. Merila, G. Lindgren, and H. Ellegren. 1998. Gender and environment sensitivity in nestling Collared Flycatchers. Ecology 79:1939-1948.
31. Squires, J.R. and R.T. Reynolds. 1997. Northern Goshawk (Accipiter gentilis). In A. Poole and F. Gill [Eds.], The Birds of North America, No. 298. The Academy of Natural Sciences, Philadelphia, PA and The American Ornithologists' Union, Washington, DC U.S.A.
32. SPSS. 1997. User's guide, Base 7.5 for Windows, SPSS Inc., Chicago, IL U.S.A.
33. Steenhof, K. 1987. Assessing raptor reproductive success and productivity. Pages 157-170 in B.A. Pendleton, B.A. Millsap, K.W. Kline, and D.M. Bird [Eds.], Raptor management techniques manual. Natl. Wildl. Fed. Sci. Tech. Ser. No. 10., Washington, DC U.S.A.
34. Teather, K.L. and P.J. Weatherhead. 1988. Sex-specific energy requirements of Great-tailed Grackle (Quiscalus mexicanus) nestlings. J. Anim. Ecol. 57:659-668.
35. Torres, R. and H. Drummond. 1997. Female-biased mortality in nestlings of birds with size dimorphism. J. Anim. Ecol. 66:859-865.
36. Trivers, R.L. and D.E. Willard. 1973. Natural selection of parental ability to vary the sex ratio of offspring. Science 179:90-92.
37. Weatherhead, P.J. and K.L. Teather. 1991. Are skewed fledgling sex ratios in sexually dimorphic birds adaptive? Am. Nat. 138:1159-1172.
38. Zar, J.H. 1984. Biostatistical analysis. 2nd edition. Prentice-Hall, Inc., Englewood Cliffs, NJ U.S.A.