Whole body fat content of Pacific dunlins. Distributions of whole body fat content of dunlins collected in the late 1970s (black symbols; from McEwan & Whitehead ) versus the 1990s (grey symbols). Error bars are standard deviations. Females are indicated by a circle and males by a triangle. Two individuals from the 1990s dataset could not be gender-assigned and are designated by a star. Details of the data sets are given in the Methods.
Ydenberg et al. BMC Ecology 2010 10:1 doi:10.1186/1472-6785-10-1