The tree has...

0Yes. Perhaps:02br
00The tree has four birds in it. 02br
00or02br
00There are four birds in the tree. 0-

0Can I say,02br
02br
00(a) The road has cars. 0-

0Perhaps but this is informal: 02br
01i00(a) The road has cars 01b00on it.02b02i02br
02br
00Normally, the ownership/possession (have) is less associated with things. 0-

0 01blockquote

01cite10Vincent Teo12cite10Can I say,12br
12br
10(a) The tree has four birds.12br
12blockquote

10 No. Trees don't have birds. Trees have leaves, branches, and roots.02br
02br
00You can say that four birds are living in the tree or that four birds are sitting on the tr

0While I prefer the "there are/were birds in the trees" myself, I think that in literary contexts derivations of the original sentence have been used: 02br
00 ------02br
00Trees soothed. 01b00Trees had birds and squirrels02b00, and could be02br
00 climbed. Buildings had cubicles and security guards, and climbing them02br
00

0I have to agree with CalifJim on this one. I seriously doubt that the original poster is interested in writing poetry. It's far more likely that he wants to know what's correct in everyday speach and writing and in everyday speach trees don't have birds and roads don't have cars. 0-