Bird Banding Laboratory


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Sex Codes and How Sexed Codes

Sex Codes

NUMERIC
CODE
ALPHA
ABBREVIATION
DEFINITION
0 U Unknown
4 M Male
5 F Female
6 m Male, sexed upon recapture
7 f Female, sexed upon recapture

 

How Sexed Codes

CODE DESCRIPTION
0 cloacal examination (waterfowl only)
1 adult plumage
2 juvenal plumage
3 eye color
B brood patch
C cloacal protuberance
D DNA/chromosome analysis
E egg in oviduct
L laparotomy/laparoscopy
M mating/copulation
O behavioral observation not including copulation
T tail length
W wing chord
X Not attempted
Y culmen
Z multiple measurements