by Pajarita » Wed Sep 28, 2016 12:18 pm
Welcome to the forum! I am afraid that what you are describing is typical. A bird will always 'behave' in a new home (we call this the honeymoon period) but, once it feels more comfortable in its surroundings, it starts showing its true colors so don't think that it's nothing you have done, it's the way parrots behave when they are rehomed.
Now, as to how to eliminate this behavior... There are two things that cause this behavior, one is physical (sexual hormones - and your bird seems to be overly hormonal -the regurgitation is a clear indication of this because, this time of the year, senegals should not be producing any sexual hormones) and the other is the way the bird is used to dealing with humans so you need to 'attack' both fronts. The sexual hormone issue is taken care of by keeping the bird at a strict solar schedule with full exposure to dawn and dusk so as to make her endocrine system produces sexual hormones ONLY during breeding season and not all year round (no bird produces sexual hormones all the time in the wild). It's not so much the number of hours the bird sleeps but the number of hours the bird is exposed to light and, in order for the bird's body to 'register' this, it needs to be exposed to dawn and dusk without interference of artificial lights (and, of course, it needs to go to sleep after dusk and not be exposed to any lights until the following morning). This is because birds are photoperiodic, a long word that means that they control their 'seasons' by the number of daylight hours and this number is recorded by their photoreceptors (cells that 'perceive' light) as they are 'turned on or off' by the different kind of light that happens at twilight -think of it as a stop watch that gets turned on by dawn and off by dusk.
The other cause of production of sexual hormones is too much protein in their diet. Nature made it so birds breed when the conditions are favorable and, for that to happen, there needs to be lots of rich food (which is needed not only to produce the eggs but also to feed the growing babies). Now, in the wild, there are seasons when there is lots of food and there are seasons when there isn't but, in captivity, there is always rich and plentiful food so we, as bird keepers, need to be very vigilant as to the amount of protein and fat we provide on a daily basis and free-feeding (filling up a bowl and leaving it there all day long) the high protein source (pellets, seeds, nuts, nutriberries, avicakes, beans, etc) is what does it. That's why I feed my birds (I have two senegals, one male and one female) gloop and raw produce for breakfast and a good quality seed/nut mix for dinner only.
Then we have the behavioral part of the problem... Parrots are not naturally aggressive. They are, actually, VERY patient and tolerant but, eventually, if one doesn't 'listen' to them, they end up biting us because we have given them no other choice to get their point across. I suspect that this is what happened to this bird and, the problem with this is that they get used to dealing with people by biting. Again, it's not their fault, it's the fault of the people who had this bird in the past. Now, there is no magic bullet for this problem. It's a matter of being loving, patient and treating the parrot with respect and keep on doing it until the parrot realizes there is no longer a need for bites. I don't believe in the very common advice of not reacting to a parrot's bite. I think the 'logic' behind it is stupid, parrots are way too smart to confuse a scream of pain with one of joy and they don't enjoy causing pain so why would not reacting work in any way? There is no animal in nature that would not react to pain so why would us not reacting have any other significance for a smart parrot other than to make it think we don't feel any pain? And why would we want them to think they are not hurting us? A parrot that loves you will not want you to feel pain so, in my personal opinion and experience, showing them they hurt us is the way to go. I have dealt with many aggressive parrots (wild-caught, breeders, male amazons defending a nest or a mate, etc) and it has always worked. I scream in pain, tell them "BAD BIRD!" and turn my back on them or walk away. BUT the real trick is never to give them a chance to bite you! But this is easier said than done because, in order for one to avoid all bites, one needs to not only learn the bird's body language inside out but also learn what the bird likes and dislikes -you need to learn the triggers that make it bite you and always avoid them.
Now, what I would do is re-evaluate its diet and light schedule and change it so as to ensure the bird will stop producing sexual hormones (a bird that is overly hormonal is a bird in physical discomfort and, most likely, pain as well as sexually frustrated and this equals aggression); establish strict daily routines (4 hours minimum of out of cage time and 2 hours minimum of one-on-one with its chosen one -senegals are NOT family pets, they are a one person bird- my birds are out from 6:30 am to 1 pm every day) like breakfast at dawn, noon rest, dinner at dusk, etc and continue using the stick instead of your hand for perching. Another thing that is important is never to stick your hand in their cage to get them out, just open the door and let the bird come out by itself (put a couple of perches outside the cage and a couple of stands around the house for it to fly from one to the other, if it wishes -the bird is flighted, right?) and just keep at the patience and love until the bird learns to love you (it takes them a long time to actually love you, it never happens immediately, even when we think it does because the bird wants to be with us) and learn its body language so you know when to ask for something and when not to ask BUT, even though you can ask, you can NEVER insist on anything -they don't like it when we don't listen to them.