480 grams for a year old is huge scott, i have a hole clutch here from last season they all weigh between 80 to 110 and a few that are pushing 130 grams, that is being fed every 5-7 days without fail.
Also have you got any pictures of the parents of this one would love to see them.
The little one here is just over 200 G was born 28 of DEC from the BFR JUMBO line LOL
WOW thats nice!