My female is behaving very strangely. She has been singing literally constantly for hours and hours at a time, barely stopping for a breath. a lot of the time she seems to point at the christmas tree when she does this. She's also started to scratch in the food dish like a chicken, thus i have bird seed near and far in my living room. She also sings into the food dish now. The singing sounds like outside birds and regular budgie babble, but she also makes angry noises periodically while she's just sitting there by herself. What is up? There's no "heat" for birds like cats is there? Reminds me of a female cat meowing when she's in heat, CONSTANTLY!!! Any other ideas? Is she in love with my christmas tree? Is this some kind of bizzar mating ritual?