
Figure | 

ADULT TERTIALS JUVENAL TERTIALS 
a. Fresh post-nuptial plumage 
b.Worn nuptial plumage 
Figure 3 | Figure 4 


a b 
ADULT SGAPULARS JUVENAL BAGK FEATHERS 
a.Fresh post-nuptial plumage a. Scapular 
b.Worn nuptial plumage b. Middle of back 
Figure 5 
a b 
MEDIAN WING COVERTS » 
a. Adult 
b. Juvenal 
A5 
B.OM. 
