i brought a trail cam. i only got one picture of a deer. the rest were nothing but this darn tree. could the tree moving in the wind tigger the cam?

I don't think the tree the cam ismounted on moving woud trigger it, but there is some plants ( I think cedar comes to mind for one) can trigger false pics. Also if you have cam pointed where the suns movement could be detected

As RayC said be aware of the sun and it's movement.