Hi Colorado:
Senegals are high energy little birds and it sounds like you have a smart cookie!
I have had the same experience with Babylon. She will do tricks for anybody but if I let kids work with her (which is fun and works fine with my greys), the children eventually become hesitant and treat too slow and I have had her fly and nip their ears. This was disappointing but since I can't control how fast the kids treat her....I just have to resign myself that I really have to keep an eye on her if she is doing tricks for kids.
I strongly believe in keeping the integrity of the cue. That means, once you get the behavior and bridge....you keep your promise and reinforce the behavior. This builds trust. Building trust is important at this stage. If the bird is nipping, they are most likely insecure about getting that reinforcement. I can't always reinforce instantly but I want the bird to know that they WILL get reinforced. This takes time and practice. The more you reinforce, the more the bird trusts reinforcement will come and the more secure they become. The more secure, the less nips and the less you have to worry about being immediate with the reinforcement. In other words, right now - you are building that trust so go ahead and treat quickly. Later, when the trust is established, you can slow down how fast you treat.
Nips are communication to you. Are you reinforcing 1:1. At this stage, you should be. You really want to avoid nips because you do not want to inadvertantly reinforce a nip. It is always easier to get ahead of a potentially difficult behavior and prevent it than it is to untrain it. Once a nip happens, a lot of things that you do may be unintentional reinforcement for the nip (from the birds' perspective)....so, extinguishing the behavior can be really tricky. I am a big believer that preventing the behavior is always the best remedy.
You might also look at the time of day you are working on training. Is there a better time of day to train? It may be that the bird is amped up too much when you are doing your training so you might want to work when the bird is less "amped up". Are you withholding food before training? Honestly, I know that Michael has had success by withholding food before training but I do not do that with Babylon Senegal for two reasons:
1) She is so highly motivated and smart that I don't need to.
2) Withholding food will "amp" her up and increase the odds of aggression (nips).
I have worked with Babylon for 9 years now and she is so fast, I swear that sometimes she reads my mind and will get ahead of the cue. I find my Senegals to be very easy to train but the other side of that is I have to think a little harder about managing aggression. In temperament, they remind me of fox terriers....quick, smart, easy to amp up. They are very fun and rewarding and amazing companions but keep in mind that they will read cues that you do not intend and they will get ahead of you.
Michael has a lot of good videos and ideas. Everybody trains a little different and here's a video of me working with Babylon on her tricks:
http://www.youtube.com/user/AvianFlyers ... R7uTA6mxu8Alot of small training setbacks go away with time and practice. I wouldn't worry about it too much except to think about how you can make your bird more secure and get ahead of the nipping. If you reinforce the behaviors you want and get ahead of the possibility of nipping, for the most part, the nipping behavior will probably extinguish (or go away). If it doesn't extinguish, the nipping will lessen so that you can be confident about 95% of the time the bird won't nip. That's progress.
I watch my African birds interact among themselves and they do nip at each other. It's no big deal between birds because birds have down feathers and the nip doesn't hurt them. Our problem is that we don't have down feathers - We just have skin so a nip can be painful to a human. I think that nipping is one way that the birds communicate as a species. So, I have to say that I really doubt that you can completely eliminate nipping as a behavior but you certainly can greatly lessen it so that it happens rarely by teaching the bird to communicate to you using acceptable behaviors (like maybe a wave...or another little trick) rather than nipping.
One other modification that wouldn't apply to trick training but might apply to behavior management is to reinforce very soft beaks or soft nips rather than bites. ...I know that my hen usually has a very soft nip so when she gives me a soft nip, I pay attention to her so she knows gentle beaks are an effective communication so we can avoid the really hard BITE which is NEVER a good way to communicate.
Have fun. I wouldn't worry too much about the nip because it is unlikely to be consistent if you continue your practice.
Thanks!