treatment of abscess in my parrots foot and what are its causes ?

by Waleedmsk
(misr gidida, Cairo, Egypt)

My african grey parrot has recently developed an abscess in one of his toes , I tried to prick the pus gently and he very politely removed my finger by his beak away from the swelling . I suddenly pricked the swelling and bloody pus came after hearing its scream then I applied fucidin cream (topical anti-biotic)after cleaning its foot from the pus with an anti-septic and it seemed to be very painful for him ..... He generally looks healthy , playfull when left on his own , has good appetite , whistles and screeches in the morning as he used to ,could the abscess be a manifestation of decreased immunity or a sign of general ill health even when you do not notice any warning signs of general ill health ?

yours; Waleed MSK.