i don't even know how to start, my bird just died 5 minutes ago and i'm speechless.
I have....had a very happy bird, even today, all afternoon he was playing with my hand, and then he went for a nap, as usual after playing. Few minutes passed he fell to the bottom of the cage, and that's it.
No behavior changes, no fluffed feathers happy bird-> dead bird.
The only thing i noticed in retrospect that his blue cere turned purple-ish
I'm so sorry for the sudden loss of your little budgie. Sudden deaths like that can't be diagnosed without an necropsy done by the vet to determine cause of death, but it most likely was something like a heart attack or stroke, which come on suddenly.
Although it is never easy to cope with such a loss, I know he knew you loved him until the end.
Despite your sad circumstances, another welcome to the forums. Feel free to look around and read through the budgie information we have here
and Princess Mallorn!
Thank you to Deb for her wonderful Faery magic