This Egyptian goose must have been one of those people who swear to never drink again, only to wild out on weekends.
I've seen animals act like this in front of mirrors or any reflection of themselves. I wonder how humans reacted to their reflections during the old days of cavemen.
Oh yeah, he is a real hypocrite :)
Cavemen only had water to use as mirrors, and as they also had clubs, I think that they used to bash the stranger that they saw in the water reflection.