My budgie Charlie started developing these weird discolorations in his beak that keep changing almost everyday. They show up along the middle of his beak and kind of slowly move their way down from the top of his beak as it grows. This has been pretty continous for at least a month (maybe longer, honestly don't remember when it started) Lately I've noticed hes been sleeping a lot... which I know is the classic sign for sickness in birds... but when he doesn't sleep he eats like normal and plays with his cage buddy Kiwi and chirps, flys between their playgyms, gets into mischief, and acts completly normal... My mom claims that hes just bored and is sleeping a lot. but i'm pretty sure that there must be something else goin on... like a vitamin deficiency perhaps?? but he has a varied diet. normal seed, egg powder. these oats and groats type things. nutriberries. lettuce. broccoli, and cantalope. and his buddy Kiwi is acting fine. so I just don't know. I would like anybody's opinion on what it may be. besides a vet visit. Which I understand may be neccessary. I would like to in order to know what going on but my mom kind of wants to play the 'wait and see' game unfortunatly *sigh*

here are some pictures taken yesterday. I didn't resize them so that its easier to see his beak. if the images are too large just let me know and I'll resize them. thanks in advance for your input