Size and age tends to mellow all animals too.
I don't know how long you have had it, but it may calm as it begins to understand that you bring it food.(and that you don't hurt it when handling it)
I raise animals for a living, and most young animals are very skittish anyway (without being abused) when they are small or just about to leave the nest. This is an innate behavior that ensures species survival.
For instance, mice are very jumpy at the weaning age. Why? Because as they leave the nest, everything eats them if they aren't jumpy! (Calm ones get gobbled up by something!) As a result, the jumpy ones survive to become the next generation, and this jumpy behavior is then reinforced in the gene pool.
The same can be said of baby parrots (depending on the species, some are much worse than others). At the age they should leave the nest, they scare very easily. A few weeks after weaning, they don't scare nearly as easily and are far less likely to bite out of fear.
The same can be said of many snakes. (Babies are squirmy or defensively nippy, adults are calm.)
As long as you don't get adult male territorial agression with him later in life, he should calm down (assuming it is a male). And if it is a female, it should be fine even in old age.
But there are exceptions!
good luck,
Rodney
