RE: bauplan convergence

[Richard W Travsky <rtravsky@uwyo.edu>]

From: Betty Cunningham wrote
> 
> I still put a vote behind the protofeather sexual display hopping thing
> for wing development; which is niether trees up or trees down, really. 
> It makes more evolutionary sense to have a pre-flight-capable wing for
> making pretty, that later develops flight-worthiness, than a post-flight
> flipper developing flight-worthiness does...

Threat or defensive displays would also fit that scenario.