[Welf]

I've never seem a bird who flies in the house as being bad luck. Happens quite regularly here. I live surrounded by bush and my back doors are wide and often open. Seems like I live in a bird flight area.

As far as a bird who flies in and is sick or injured, because most birds I have here are native ones and are protected, I will keep the bird comfortable and call in WIRES which is a voluteer organisation here for rescuing injured and sick birds and animals.

Dead bird in the house? Could be that if you have a cat it has dragged a bird in... Or that the bird has simply 'chosen' or stumbled into your home for a place to die in. Everything has to die somewhere...

Maybe the bird is telling you something, bringing a spirit message? But the best is, being able to set the bird free from you house and see it fly away to freedom...

Welf