birds are fit

have you ever seen a bird and thought that bird is really fat? i 
have not seen a really fat bird as yet!! i have seen fat dogs, 
fat cats, fat rats.. mammals are so lazy!!

i guess they cant be fat else they would not be able to fly. but 
i guess the ones that dont fly can be "fat" like chickens.. but 
not exactly fat.. muscles.

if you are opposing earth's gravity on a daily basis, you dont 
get to remain fat.