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How about Bell? Luna does put her butt in the air - it's an advertisement if you know what I mean! The females will also make a cute little squeaky noise for mating.

Good Luck!!

Jo

Males do the "heartwing", where the lift their elbows (top part of their wing) up but not lift the bottom part of their wings... to show off.. then they strut on their perches.

Male showing off...
http://www.youtube.com/watch?v=Spvzbzb6aEg
http://www.youtube.com/watch?v=Spvzbzb6aEg

Females lift their but in the air, with tiny little squeaks... they may also flutter their wings...

Vid showing hormonal female and a male who doesn't know what to do... can hear the female chirp...
http://www.youtube.com/watch?v=4A-WzCcrlZY


Sure sounds like "Boss" is a female though, if displaying female behavoir!