Fig. 2. Estimated apparent survival rate and 95% confidence intervals for Least Sandpipers at study sites in the Lower Mississippi River Alluvial Valley during fall migration 2002 derived from the model φ TT4*group p site. Triangles represent birds at Bald Knob National Wildlife Refuge, Arkansas, squares represent adult birds and circles represent juvenile birds at Yazoo National Wildlife Refuge, Mississippi, and diamonds represent birds at Morgan Brake National Wildlife Refuge, Mississippi.