Figure 10. Population growth of great white heron in Florida Bay. (Data derived from 
observations from fixed wing aircraft. Open circles are summer censuses, and crossed circles 
are winter censuses.) [Redrawn from Powell et at. (1989b).] 
Year 
Figure 11. Population growth of roseate spoonbill in Florida Bay. (Simple circles are numbers of 
nests counted on ground visits to colonies. Crossed circles are estimates derived from aerial 
counts.) [Redrawn from Powell et al. (1989b).] 
35 
