10 week old male, I've had him for nearly a month now.
He used to be so energetic and responsive towards my presence. Used to sing all the time (especially during his free-time out of the cage).
He knew "come" when I tapped on something, and "step up". He was even getting the hang of jumping longer distances from his perch to my finger. Really smart little guy.
Lately he's been less responsive towards me. Spends less time singing, sings for shorter periods, isn't as active on his play area outside the cage, and seems less excited about treats (of course he still takes them).
I noticed his behaviour first started changing when I was transitioning him towards Harrisons pellets as a major part of his diet. I think it got worse after adopting a new budgie and bringing it into quarantine. At points in the day they can hear each other calling, but obviously quarantine means they can't actually see each other yet. He gets really agitated when this is happening...
Any input or suggestions? I've been trying to spend as much time with him as I can, but he doesn't react to time with me like he used to. He's less interested in treats, doesn't follow his established training, and seems like he just wants to mope during fun time.
Anything I can do to help him through this? Unfortunately there are no other rooms that I can move the quarantined bird into. I've thought about leaving her covered for most of the day to keep her a bit less vocal, but that's not exactly fair to her, and I really don't like that idea.
Your budgie has been going through quite a few changes in the short amount of time you've had him and this can reflect the current behaviour.
Budgies can also start a moult as soon as they reach 3 months old (12 weeks old), there is also the possibility he is readying himself for it or already starting to moult and the symptoms you described fit perfectly to it.
Make sure he is eating well during the diet change and supplement his diet with egg food when he's moulting. If he's losing weight or is not interested in the food you will have to make adjustments on his diet to address the issue.
It's perfectly understandable for both your budgies to flock call and to want to meet each other, but it's important to go through with quarantine.
Maybe if you turn the radio or TV on they won't be able to hear each other's chirping/singing and won't be so eager to get to one another.
RIP sweet Tito (Summer 2008 - January 17th 2013).
You are missed and never will be forgotten.
Of course, molting! I had completely forgotten about that... Could very well be the case, but yes, either way he's had a lot of changes in his environment... Totally understandable, but hard to watch. He's still eating like a pig though.
Poor guy's going to be in for another big change when I finish furnishing the flight cage he's been watching me build and he realizes he actually gets to live in it.