Some birds are using antibird spikes to build their nests

The spikes were meant to keep birds away. But five corvid nests in Europe use the bird-deterrents as structural support and to ward off predators.

Are bird spikes safe for birds? Why or why not? - Quora

Bird B Gone Enviro Spike 10 ft. x 5 in. Stainless Steel Bird Spikes 100516567 - The Home Depot

Why these Crows are using Anti-bird Spikes to Build their Nests

Bird control spike - Wikipedia

They're Outsmarting Us': Birds Build Nests from Anti-Bird Spikes - The New York Times

Birds get revenge by using anti-bird spikes in nests - BBC News

4 Easy Ways to Keep Birds Away - wikiHow

They're Outsmarting Us': Birds Build Nests from Anti-Bird Spikes

How To Keep Birds From Building Nests With One Secret!

Birds are using anti-bird spikes to fortify nests in 'perfect comeback' - 1BREAKINGNEWS.COM - video Dailymotion

Thread by @AukeFlorian on Thread Reader App – Thread Reader App

Crows and magpies are using anti-bird spikes to build their nests

Birds have learned to use 'anti-bird' spikes to build their nests

Do Bird Spikes Work for Small Birds? - Bird B Gone LLC