Drying the wings and baking-off bacteria are also possibilities. This posture is termed the "horaltic pose".
The dictionary defines "horal" as "pertaining to an hour or hours; hourly."
I wonder what they had in mind here... maybe the outstretched wings
reminded someone of a bird imitating a clock face. ;-)
Unless... they were referring to the Israeli round dance, the "hora." I
could see that, too.