...possibly Big Bird, from Sesame Street.
However, this is possibly an impossible question to answer as "fattest" does not mean anything in particular. For instance - some birds naturally put on huge amounts of body fat directly before migrating. Many pet birds are obese, and some birds are naturally very heavy. Ha Ha
9 pounds
Yello collered
yeah what is the fattest chinny cause i have a VERY FAT chin and we want him to be the fattest one
the worlds fattest dolphin ever recordes is 36,9 tons
the fattest chef is Leonardo pickle he is 500 pounds
the fattest person ever weigh 8,451 lb.
Jordan Laming!
The fattest puffin ever recorded was an Atlantic puffin that weighed approximately 1.5 kilograms (3.3 pounds). This unusual weight was noted during a study on puffin populations in the North Atlantic, where researchers found that the bird's weight was significantly above average due to an abundance of food sources at the time. Such extreme weight is rare and can impact the bird's ability to fly and breed effectively.
The fattest bird in the world is the Kori Bustard, which can weigh up to 40 pounds. They store fat in their bodies to help sustain them during long flights or periods of food scarcity.
The fattest rabbit ever weigh so far was 22 lbs.
If by fattest you mean largest or most massive, that would be the ostrich
In my opinion its... Big Brother, he is red birds cousin and he is big and round.