Fig. 2From: Seasonality at the equator: isotope signatures and hormonal correlates of molt phenology in a non-migratory Amazonian songbirdBi-plot of stable carbon, nitrogen and sulfur isotope values for blood cells indicates no major changes in the foraging ecology over the year, but seasonal variations in the sulfur signatures. The symbols represent the mean values (+/− SE) over four sampling periods (April, July, October 2011 and January 2012)Back to article page