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In cities around the world, anti-bird spikes are used to protect statues and balconies from unwanted birds - but now, it appears the birds are getting their own back.
Dutch researchers have found that some birds use the spikes as weapons around their nests - using them to keep pests away in the same way that humans do.
It shows amazing adaptability, biologist Auke-Florian Hiemstra says.
"They are incredible fortresses - like a bunker for birds," he told the BBC.
(...)
Dutch researchers have found that some birds use the spikes as weapons around their nests - using them to keep pests away in the same way that humans do.
It shows amazing adaptability, biologist Auke-Florian Hiemstra says.
"They are incredible fortresses - like a bunker for birds," he told the BBC.
(...)
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