Glad to hear Myka is doing better! Severes, and macaws in general, are very mouthy birds. When my severe, Goober, is on me and getting pet she's pretty much always gnawing on my hands and fingers and that seems to be pretty common behavior in macaws. I let her gnaw on me as long as she's being gentle and if she pinches, I make a somewhat sharp "ack!" sound, similar to the noise she makes when she's grumpy or if I hit a pinnie on her head, and say "gentle, Goober, gentle" and she usually lets right up. It probably makes me sound like a little bit of a bird nut, but I've had a lot of success with getting the point across on being too rough by mimicking their 'ouch!' noises - it certainly gets their attention!
I wouldn't roll or shake your arm for pinching unless he's doing it aggressively or being pushy trying to get his way... if he's just chewing on you and pinches along the way it may confuse him. The biggest key is consistency and not
confusing him by sending mixed messages. With macaws, severes specifically, keep a close eye on their eyes - when angry, excited, and likely to pinch or bite their head will duck down a little, pupils will dilate and pinpoint rapidly, and they may even blush, usually just some redness around the eyes but the whole white of the face will sometimes turn red as well. Goober ducks her head down, sort of suddenly and pinpoint at the same time, often vocalizing along the way "hi!" or "hello?" You'll learn to read Myka's individual behavior
If he regurgitates on you, just gently tell him no and put him away. While it's the ultimate birdy compliment it's a precursor to hormonal behavior which is something you do not want, especially in a male. It'll often lead to displaced aggression and frustration. If you notice any regurgitating on you or his toys discourage it and take the toy away, rubbing his vent on anything (perches, you, toys, many parrots have aweird foot fetish :roll eyes: ) take those away and discourage it too. You may have to limit his daylight hours if it continues. Goober does not get hormonal often, but now that she's in her teenage years and reaching sexual maturity it's worse when she does get hormonal. I couldn't get her out of her cage for a solid week without a serious bite and attitude
Severes are a LOT of fun but are a handful! Hormone-based aggression is a really common problem in them and something most owners go through, especially when they reach 4-5 years old.
I don't check in on here very often anymore, work and life are keeping me really busy, but if you ever need anything or have any questions feel free to shoot me a PM! It'll show up in my email that way
I hand-raised my severe when I worked at a specialty parrot store and have worked with birds for over 20 years, handfeeding, raising, and behavior modification, and have worked with several severes along the way with a good deal of success (I like a challenge and brat birds, what can I say? I'm a major sucker for 'he bites everyone, don't touch him!' and winning them over
) so I'd be happy to share any tips or advice you need!