Tree Problem

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The holes in the bark look to me like bird peck. The bird that I am most familar with that does this is the yellow belly sap sucker. It is a wood pecker. The holes are drilled in the bark to the sap wood where the exuding sap atracts insecets which the bird will later feed on. Some trees of the same species seen to atract more birds with the birds returing year after year to the same tree. This constant wounding can in some cases lead to tissue death and tree death.

The worms, in my opinion are most likely feeding on the dead tissue and not causing the tissue to die. That's what I see in the photo.

But I could be wrong about all of this
 
The holes in the bark look to me like bird peck. The bird that I am most familar with that does this is the yellow belly sap sucker. It is a wood pecker. The holes are drilled in the bark to the sap wood where the exuding sap atracts insecets which the bird will later feed on. Some trees of the same species seen to atract more birds with the birds returing year after year to the same tree. This constant wounding can in some cases lead to tissue death and tree death.

The worms, in my opinion are most likely feeding on the dead tissue and not causing the tissue to die. That's what I see in the photo.

But I could be wrong about all of this

I've never seen or heard a woodpecker there as it is right outside our house. The hole tree is riddled with these holes. Where I reveaved the worm, the bark and contents behind it were rotten. The wood looked aright except for the worm holes.
 
That looks like an English Elm. Are the leaves small? Like 0.5"-2". Sheds branches often? It is susceptible to Dutch Elm Disease, but usually takes longer to die than native varieties. The weakened system will make it more vulnerable to insect attacks. Birds come to eat bugs, there you go. They also seem to drain sap or water from crotches and other places alot, hence the dis-coloration on those spots. You may wana ask in the commercial tree care. Pretty sure that is what you have though. The bugs will be drawn to the moisture too. The worm is probably just hanging out. They usually dig around under the bark not over and in repeatedly. Thats bird action.
 
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That looks like an English Elm. Are the leaves small? Like 0.5"-2". Sheds branches often? It is susceptible to Dutch Elm Disease, but usually takes longer to die than native varieties. The weakened system will make it more vulnerable to insect attacks. Birds come to eat bugs, there you go. They also seem to drain sap or water from crotches and other places alot, hence the dis-coloration on those spots. You may wana ask in the commercial tree care. Pretty sure that is what you have though. The bugs will be drawn to the moisture too. The worm is probably just hanging out. They usually dig around under the bark not over and in repeatedly. Thats bird action.
Other than holes and the worms the tree appears healthy. No limbs ever fell off, or are any dead. Thanks I will check over there.
 

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