Figure 2

The shape of density-dependent nest-survival of wood thrush estimated as a generalized Beverton-Holt function30 from a site-dependence model for each landscape. Landscapes are arranged (left to right, top to bottom) from low to high quality. Red circles are estimated wood thrush density (breeding pairs ha−1) in 1992 and red arrows show the slope (strength of density dependence) at the estimated density. Tipping points (blue diamonds) are where the strength of density dependence is changing most rapidly. The bottom right panel shows how abruptness of the curves increases with increasing landscape quality with fitted loess curve.