Mate choice
•
Expected: 1:2:1 ratio of
(TSxTS),(TSxWS),(WSxWS)
•
Observed:
over 95% of mated pairs are
Tan-striped x White-striped
•
Negative assortative mating
(each bird prefers
a mate of the opposite color morph)
•
Offspring of TSxWS pairs are 1/2 TS
and 1/2 WS