...Big enough for your parakeet to fit through...
Yes it depends if they are pregnant they will not if they are and if their not they will. Get a big rock for it.
You don't. Parakeets are birds. They do not get pregnant, as reproduction is done through the laying of eggs. The eggs take about three weeks to form properly in the body, but this is not called "pregnancy". They look the same when they are laying eggs as when they aren't. In other words, birds don't "hold" their eggs inside their bodies and they do not show a big belly to indicate that eggs are on the way. Birds which are getting close to laying an egg become more lively, excitable and playful. You need to provide it with a nesting box in its cage.
As you said on the back. On the alien's back, if it is pregnant, there should be a long hole from the start of its head to about half of its back. Eventually it should peel off and leave a big, long hole. When it does that it means that it is ready to give birth.
The ozone hole is quite big. It is as big as Australia.
they are small not big at all they are bigger then a parakeet but smaller then a senagle
The ozone hole is over Antarctica. It is quite big
The ozone hole is quite big. It is as big as Australia.
big
The Antarctic hole is big enough. It is the size of Australia.
Four inches at the most These small birds can fit just about anywhere. But for a tip most tree/barn swallows like nesting in small corners, like the corner of your patio roof.
that just means their molting, its no big deal
This probably means its pregnant. If u don't already u need to put a nesting box in the cage so it can have the babies. If u don't do this she will not have the babies and they will die inside of her when they grow to big.