A new approach for analyzing bird densities from variable circular-plot counts

Pacific Science

Volumn 51, Issue 1, 1997, Pages 107-114

  Fancy, Steven G ^a  

^a U S GEOLOGICAL SURVEY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BIRD IDENTITY; VARIABLE CIRCULAR-PLOT COUNT;

EID: 0031425140     PISSN: 00308870     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (24)

1. BART, J. 1985. Causes of recording errors in singing bird surveys. Wilson Bull. 97:161-172.
2. BART, J., and J. D. SCHOULTZ. 1984. Reliability of singing bird surveys: Changes in observer efficiency with avian density. Auk 101:307-318.
3. BUCKLAND, S. T., D. R. ANDERSON, K. P. BURNHAM, and J. L. LAAKE. 1993. Distance sampling: Estimating abundance of biological populations. Chapman and Hall, New York.
4. BURNHAM, K. P., D. R. ANDERSON, and J. L. LAAKE. 1980. Estimation of density from line transect sampling of biological populations. Wildl. Monogr. 72:1-202.
5. DESANTE, D. F. 1981. A field test of the variable circular-plot censusing technique in a California coastal scrub breeding bird community. Stud. Avian Biol. 6:177-185.
6. _. 1986. A field test of the variable circular-plot censusing method in a Sierran subalpine forest habitat. Condor 88:129-142.
7. FANCY, S. G., T. J. SNETSINGER, and J. D. JACOBI. 1997. Translocation of the Palila, an endangered Hawaiian honeycreeper. Pac. Conserv. Biol. 4 (in press).
8. JACOBI, J. D., S. G. FANCY, J. G. GIFFIN, and J. M. SCOTT. 1996. Long-term population variability in the Palila, an endangered Hawaiian honeycreeper. Pac. Sci. 50: (363-370).
9. KEPLER, C. B., and J. M. SCOTT. 1981. Reducing bird count variability by training observers. Stud. Avian Biol. 6:366-371.
10. LAAKE, J. L., S. T. BUCKLAND, D. R. ANDERSON, and K. P. BURNHAM. 1994. DISTANCE user's guide V2.1. Colorado Cooperative Fish & Wildlife Research Unit, Colorado State University, Fort Collins, Colorado.
11. MCCRACKEN, M. L. 1994. Factors affecting bird counts and their influence on density estimates. Ph.D. diss., Oregon State University, Corvallis.
12. POLLOCK, K. H., J. D. NICHOLS, C. BROWNIE, and J. E. HINES. 1990. Statistical inference for capture-recapture experiments. Wildl. Monogr. 107:1-97.
13. RALPH, C. J., and S. G. FANCY. 1994a. Timing of breeding and molting in six species of Hawaiian honeycreepers. Condor 96:151-161.
14. _. 1994b. Demography and movements of the endangered Hawaii Creeper and Hawaii Akepa. Wilson Bull. 106:615-628.
15. _. 1994c. Demography and movements of the Omao (Myadestes obscurus). Condor 96:503-511.
16. RAMSEY, F. L., and J. M. SCOTT. 1979. Estimating population densities from variable circular plot surveys. Pages 155-181 in R. M. Cormack, G. P. Patil, and D. S. Robson, eds. Sampling biological populations. International Cooperative Publishing House, Fairland, Maryland.
17. _. 1981. Analysis of bird survey data using a modification of Emlen's methods. Stud. Avian Biol. 6:483-487.
18. RAMSEY, F. L., V. WILDMAN, and J. ENGBRING. 1987. Covariate adjustments to effective area in variable-area wildlife surveys. Biometrics 43:1-11.
19. REYNOLDS, R. T., J. M. SCOTT, and R. A. NUSSBAUM. 1980. A variable circular-plot method for estimating bird numbers. Condor 82:309-313.
20. ROBBINS, C. L. 1981. Effect of time of day on bird activity. Stud. Avian Biol. 6:275-286.
21. SCOTT, J. M., F. L. RAMSEY, and C. B. KEPLER. 1981. Distance estimation as a variable in estimating bird numbers. Stud. Avian Biol. 6:334-340.
22. SCOTT, J. M., S. MOUNTAINSPRING, C. VAN RIPER III, C. B. KEPLER, J. D. JACOBI, T. A. BURR, and J. G. GIFFIN. 1984. Annual variation in the distribution, abundance, and habitat of the Palila (Loxioides bailleui). Auk 101:647-664.
23. SCOTT, J. M., S. MOUNTAINSPRING, F. L. RAMSEY, and C. B. KEPLER. 1986. Forest bird communities of the Hawaiian Islands: Their dynamics, ecology and conservation. Stud. Avian Biol. 9:1-431.
24. VERNER, J. 1985. Assessment of counting methods. Curr. Ornithol. 2:247-302.