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.

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

Birds have been using anti-bird spikes to make nests

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

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Birds Using Anti-Bird Spikes to Build Nests

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European Birds Have Been Using Anti-Bird Spikes To Make Nests

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