Spikes on trees in Oxford to 'stop bird poo' - BBC News

A wildlife campaigner says he believes the spikes are to stop birds from messing on cars.

Bird sculptures installed in Somerset nature reserve - BBC News

Anti-bird' spikes on tree A tree has had its branches covered in

TSL 68 4 - Winter 2020

Pro Landscaper June 2015 by Eljays44 - Issuu

Sophie (@SophieSzn) / X

Crow filmed removing bird spikes from its perch on building

Outrage over anti-pigeon spikes fitted to TREES to stop birds

Westminster Council removes anti-bird spikes from tree - BBC News

Birds get revenge by using anti-bird spikes in nests