Trouble with tree
Without seeing leaves and their arrangement on the stems we can't identify your tree for sure. It could possibly be an elm.
We think that what you are seeing here is slime flux. Here is our page about that:
How do the leaves and canopy look? Thick and healthy?
If the tree is close to your home or other property/people, you may consider having a tree health specialist (Certified Arborist) come and take a look. They are credentialed through the International Society of Arboriculture (ISA). You can search for one at www.treesaregood.org.
Thank you. No, tree is not that healthy. We are considering having it removed. Thanks for the information.