What Is This N How Do I Fix This Problem

Question

English holly tree is dying

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Answer 1

It is not likely dying, but it does look like sap sucker, woodpecker, or other bird related damage.

You may have to resort to things like bird netting or predator urine to keep them away.

https://www.gardeningknowhow.com/plant-problems/pests/animals/woodpecker-damage-trees.htm

https://www.gardeningknowhow.com/plant-problems/pests/animals/using-predator-urine-in-gardens.htm