Oak Burr

Oak Burr

Observation - Oak Burr - UK and Ireland. Description: The burr has been on the tree over 15 years - the last 4 years it does not seem to have got any bigger infact it looks like it is losing bits. Just wondered what insect? has caused this.

The burr has been on the tree over 15 years - the last 4 years it does not seem to have got any bigger infact it looks like it is losing bits. Just wondered what insect? has caused this.