WOOD DUCK (continued) 
2. Greater and Middle Coverts: 

(a) One or more iridescent feathers noticeably deeper 
purple with broader black terminal bands than 
most distal iridescent coverts; metallic blue 
generally does not extend anteriorly to the second 
row of secondary coverts, blue color is much re- 
stricted distally to coverts near tertials, middle 
coverts rough and rather small, somewhat trapezoidal-- Immature 
(b) Iridescent feathers grade gradually from deeply 
colored to more lightly colored blues or purple, 
black terminal bands similar on all; metallic 
blue extends anteriorly onto the second row of 
secondary coverts and distally over two-thirds 
of the coverts anterior to the secondaries; 
middle coverts smooth, rounded, and rather large ---- 3 
3. Most Proximal Greater Coverts: 
(a) Greener and duller than adjacent coverts, 
also smaller and narrower --------------<------------- Immature 
(b) Somewhat greener or lighter purple than adjacent 
coverts, but approximately the same size and 
Shape weer err rr re eer ewer ees ee rec resenen Adult 
Age Determination of Females 
1. Tertials: 
(a) One or more: pale bronze, narrow, 
pointed frond-like tips ---------<---+-------+--+----- Immature 
(b) All: pale bronze, wide with blunt 
Tound tipS -------- nnn nnn nen nn nnn nn een nn een ee seen- 2 
2. Greater Tertial Coverts: 
(a) Greenish yellow to greenish ------------------------- Immature 
(b) Pink or purplish pink ------------------------------- 3 
25 
