Fig. 1 — Red Crossbill, Adult Male Fig. 4 — White-winged Crossbill, Adult Male 



Fig. 2 — Red Crossbill, Im. Male Fig. 5 — White-winged Crossbill, Im. Male 



Fig. 3 — Red Crossbill, Female Fig. 6 — White-winged Crossbill, Adult Female 



(One-half natural size) 



