Do Parrots Feel Jealousy?

Maybe the color green is usually associated with envy, but in the case of parrots it could be the color of jealousy.  I have for the last 15 years dealt with an extremely jealous senegal parrot.  He loses his mind when his "sister," a blue-fronted amazon, is in my office and he isn't. He will screech relentlessly until either I bring him in as well or I put the amazon back out with him.

I learned pretty early on this little green beast could not be left within striking distance of any other bird. He managed to jump off his cage, scare a lovebird into jumping off his, then chased him until he slipped out through a tiny space under the security door. Max followed. I came into the room to find both birds missing. This took a matter of minutes of inattention (birds are like 2-year-olds - you really can't turn your back for a minute!), and I was frantic trying to figure out where the heck they were.  I called for Max knowing he would be the one to answer. Finally I heard a little peep and realized they were outside.  Max was hiding in the bushes - probably dove in their when he realized what a dumb move it was to get outside - and the lovebird was sitting on top of a trashcan, safe from the senegals ill-intentioned deeds.

Needless to say they never got to be out of their cages at the same time, and I had to stuff a towel in that space under the security door when anyone was out.

Max has done other naughty deeds to try to eliminate the competition, so now he is persona non grata with the other birds. His jealousy kind of puts more limits on him than he'd have if he were more accepting of his "flock" but we have learned to live with it.