Intraspecific variation in loggerhead shrikes: Sexual dimorphism and implication for subspecies classification

Auk

Volumn 113, Issue 1, 1996, Pages 221-223

  Collister, Douglas M ^a,b   Wicklum, Dan ^a,c  

^a UNIVERSITY OF CALGARY   (Canada)

^b URSUS Ecosystem Management Ltd   (Canada)

^c UNIVERSITY OF MONTANA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CARETTA CARETTA; LANIIDAE; LANIUS LUDOVICIANUS;

EID: 0000115803     PISSN: 00048038     EISSN: None     Source Type: Journal    
DOI: 10.2307/4088949     Document Type: Review

References (14)

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2. CADMAN, M. D. 1985. Status report on the Logger-head Shrike in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa, Ontario.
3. COLLISTER, D. M., AND R. G. FISHER. 1994. Trapping techniques for Loggerhead Shrikes. Wildl. Soc. Bull. 23:88-91.
4. ERSKINE, A. J., B. T. COLLINS, E. HAYAKAWA, AND C. DOWNES. 1992. The cooperative breeding bird survey in Canada, 1989-91. Canadian Wildlife Service Progress Note 199.
5. GRABER, R. R., J. W. GRABER, AND E. L. KIRK. 1973. Illinois Birds. Laniidae. Biol. Ser. No. 83. Department of Registration and Education, State of Illinois.
6. HAAS, C. 1987. Eastern subspecies of the Loggerhead Shrike: The need for measurements of live birds. N. Am. Bird Bander 12:99-102.
7. HANDS, H. M., R. D. DROBNEY, AND M. R. RYAN. 1989. Status of the Loggerhead Shrike in the northcentral United States. Missouri Cooperative Wildlife Research Unit. Columbia, Michigan.
8. JOHNS, B., E. TELFER, M. CADMAN, D. BIRD, R. BJORGE, K. DE SMET, W. HARRIS, D. HJERTAAS, P. LAPORTE, AND R. PITTAWAY. 1994. National recovery plan for the Loggerhead Shrike. Recovery of Nationally Endangered Wildlife Report No. 7., Ottawa, Ontario.
9. MILLER, A. H. 1931. Systematic revision and natural history of the American shrikes (Lanius). Univ. California Publ. Zool. 38:11-242.
10. MORRISON, M. L. 1979. Loggerhead Shrike eggshell thickness in California and Florida. Wilson Bull. 92:468-469.
11. MORRISON, M. L. 1981. Population trends of the Loggerhead Shrike in the United States. Am. Birds 35:754-757.
12. TELFER, E. S. 1992. Habitat change as a factor in the decline of the western Canadian Loggerhead Shrike, Lanius ludovicianus, population. Can. Field-Nat. 106:321-326.
13. VAN WYNSBERGHE, N. R., J. D. RISING, AND D. I. MACKENZIE. 1992. Geographic variation in size of the Eastern Kingbird. Wilson Bull. 104:612-629.
14. WILKINSON, L. 1990. SYSTAT: System for statistics. SYSTAT, Inc., Evanston, Illinois.