Looks like you got an answer, but anytime you have questions about trees on your property contact your county extension agent. They will come out and examine them for free (well, you paid taxes for the service.) We had some pine trees that were having problems and got our agent to come out and identify the problem. One (a Spruce) is dying of some root problem and needs to be removed and the other just needs a miticide. We learned a lot from the visit including the fact that somebody planted an ornamental tree in the back yard that is worth around $10,000. Need to take care of that one.
Take advantage of the free services that your county and state government provide. You're paying for them with your taxes.