My canary is biting ? :O :O :-O?

Well im so mad now im rasing here for 4 month and she lvoes me and trust me and eats from my hand and everything and when im here she dosent care she turns here bak to me sign of trust . and sometimes standon my hand . Today she is tring to bite me and VICOUSLY and madley and she puffs up and get mad when she see my finger what do i do . i scared here by puting my celuler near here she went crazy flying ... do i punish here tell me