A couple months ago I got two male budgies that I had to eventually separate. My older budgie, Astro, Is very calm and friendly to everyone he meets. But my younger budgie Comet is much different. When comet is out of his cage he is very friendly towards me and shows no fear whatsoever, but as soon as he's in his cage he is biting and attacking. I do not this it is him being afraid because I never force him to do anything he doesn't want. he will jump on my hand by himself and attack me. I'm not sure if this is him being territorial or what, but whatever it is I need some help! Any advice would be appreciated!
I think he is being territorial as you said. Comet seems to be a little more outgoing than Astro and less laid back, so I think he is defending his territory. My hen is the same way. I don't ask her to step up in the cage and I rearrange her toys when she's having "out of cage time" or she bites--hard!
Just don't try and touch him or "his" things when you put your hand in the cage and soon he'll learn you aren't trying to take over his territory.
This sounds like normal budgie behavior to me! They are quite the character
and Princess Mallorn!
Thank you to Deb for her wonderful Faery magic
Many budgies consider their cage to be "their" territory and will aggressively "defend" it when it is invaded.
If Comet is in his "teenage" phase and/or going through a molt, he may be more aggressive and bitey than at other times.
Both Skipper and Scooter went through a very "bitey" period when they hit puberty!