
ui 
2. 
BLUE-WINGED TEAL (continued) 
Age Determination of Males 
Greater Tertial Coverts: 
(a) 
(b) 
Often narrow and appear pointed with wispy tips, often 
edged with light brown to form an arc at tips ------ Immature 
Usually not particularly narrow or pointed, without 
wispy tips, edging on outer web only, and normally 
concealed n-ne nnn nee nee nnn ene en nee eee en nnnene 2 
Greater Secondary Coverts: 
(a) 
(b) 
(a) 
(b) 
(a) 
(b) 
(a) 
Two or more small dark spots at tips of coverts ---- Immature 
One or no dark spots at tips of coverts ------------ 3 
Tertials: 
October: sepia, tips may be noticeably frayed, 
often wispy tipped, edge of outer web conspicu- 
ously edged tan, particularly to tips; December: 
as above or new short greenish black tertials 
COMLNG LN sewn n mee nnn eee nn eee en nn een nn nn ee nen ne Immature 
October through December: greenish black, not 
noticeably frayed, never wispy tipped, outer web 
edging very narrow to absent, only minute tan at 
tips, full length in December ---------------------- Adult 
Age Determination of Females 
Tertials: 
Frayed or wispy tipS ---------s-en- nee nnn ee ene enone Immature 
Tips not frayed or wispy --------------------------- 2 
Greater Secondary Coverts: (figure 1) 
Little white trim, V pattern ------------<----------- Adult 
(b) Much white trim, pattern other than V -~---+-------- 3 
(a) 
Greater Tertial Coverts: 
Sepia, may be narrow and appear pointed with wispy 
tips, edged tan but edging may be frayed off ------- Immature 
16 
