None have been found so far. Even the theory of whether they actually can exist (natural or otherwise) is disputed - it seems doubtful that they exist naturally.
Totally unknown, mainly because we don't even know if worm-holes actually exist.
Worm holes have not been discovered.
Wormholes are hypothetical constructs; it is not known whether they actually exist, or whether the laws of physics even allow them to exist (if they do, artificial wormholes might be created).
No,
Not sure what you mean by "recognized," but a worm-hole could (in theory) exist perfectly well in our Universe of three spatial dimensions. You couldn't really DO much with worm-holes in our Universe (they are too unstable) but they could exist.
1) It isn't known whether aliens (in the sense of extraterrestrial life) exist. 2) It isn't known whether wormholes exist. 3) No aliens are required to explain black holes; black holes form quite naturally as a result of the collapse of a massive star.
Usually,the birds naturally
Probably not. The existence of black holes can be considered to be confirmed; the existence of wormholes is highly speculative, that is, they probably don't exist at all. According to String Theory, worm hole does exist. However black holes are not warm holes. Even if you did found a wormhole, it probably going to be only about 1 atom small.
Current thinking has it that they don't exist. None have ever been observed, and most basic models of worm holes are unstable (they would collapse very quickly). There are some models which do allow for worm holes, but those models have not yet been accepted as true by most physicists; they are mainly models which ultimately aspire to become theories of everything and in order for worms holes to be stable they have to allow for certain exotic particles which are not currently part of the Standard Model of particle physics.
there two different things
They just drink naturally and they use lips to drink water if you have a worm farm.
Usually,the birds naturally