William P. Brown and Roland R. Roth. 2009. Age-specific reproduction and survival of individually marked Wood Thrushes, Hylocichla mustelina. Ecology 90:218–229.

Appendix B. The number of breeding female and male Wood Thrushes per year at the University of Delaware Woods, 1974–2004.

FIG. B1. The number of breeding female and male Wood Thrushes per year at the University of Delaware Woods, 1974–2004. The fifteen females recorded in 1974 were not representative of female abundance during that year, when methodology was being standardized, and are not indicated on the figure. The slope of regression lines for male and female abundances over time are not significantly different from zero or from each other.