Answer: You must have a beautiful tree. It may have suffered during last year's drought and the results of that showed up this spring. It might also have been weakened by the drought and contracted some other problem as a result. Since it is an older and more valuable tree, you might want to have a professionally trained and certified arborist check it out for you to make sure there is nothing serious happening. They could also neatly prune away the dead branches before they begin to break off to minimize the risk of insect or disease entering that way.
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