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.

Crow filmed removing bird spikes from its perch on building

Fury over 'ridiculous' spikes on trees to 'stop birds pooing on

In times like these, it's necessary to talk about trees

Crow filmed removing bird spikes from its perch on building

Wealthy Bristol residents cause uproar by installing 'anti-bird

Pigeon spikes on Bristol trees branded 'idiotic

Thousands oppose anti-pigeon spikes in Bristol trees - BBC News

Birds get revenge by using anti-bird spikes in nests

Pitcher plant problems? Maybe it wants some poop. yes, I said

Barcoding Data - Baltimore Underground Science Space

Spikes on trees in Oxford to 'stop bird poo

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