Are Parlor Roller Pigeons and heavy pigeons unhappy?

[NinjaGamer2022]

Are parlor roller pigeons and other pigeons that can't or can't really fly unhappy?

 

[The Yakima Kid]

I suspect not. Chickens can fly as chicks - I have had even a young laying LF Dominique fly about 50' about 4' in the air - but they seem to accept it quite graciously when they discover that they have become earth bound.