Crows And Magpies Are Using Anti-Bird Spikes To Build Nests
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Anti-bird spikes are commonplace in urban cities. The sharp pins and poles fitted on rooftops are meant to prevent birds from perching or nesting on buildings. But in an ironic turn of events, some intelligent birds are ripping out the metal rods and using them to build nests.
The birds' usage of the spikes came to light in July 2021. A hospital patient in Antwerp, Belgium, noticed an odd-looking magpie nest in the courtyard and alerted Auke-Florian Hiemstra. The biologist at the Naturalis Biodiversity Center in the Netherlands studies how wild animals repurpose human materials.
Over the years, Hiemstra has found nests containing various unusual items. They include windshield wipers, sunglasses, and even plastic flowers. But the sight of the magpie nest, with about 1,500 thin metal rods sticking out in all directions, was like none other he had seen.
"I couldn't believe my eyes," he recalled. "These are birds making a nest with anti-bird spikes."
In the following two years, Hiemstra and his team discovered similar nests in other parts of Belgium, the Netherlands, and Scotland. Magpies are known to build nests with domed roofs that contain thorny plants to protect their eggs. Hiemstra believes anti-bird spikes are an added security measure to keep predators away. The scientists never actually saw the birds pulling out the spikes. But the buildings near the nests always had a few missing.
Heimstra's team also found Carrion crow nests with anti- bird spikes. However, while magpies position the metal rods outwards, the crows turn them inwards. The researchers, who published their findings in the journal Deinsea on July 11, 2023, believe crows may be using them to build stronger nests.
"They're outsmarting us," Hiemstra said. "We're trying to get rid of birds, [but] the birds are collecting our metal spikes and actually making more birds in these nests. I think it's just a brilliant comeback."
Magpies and crows belong to the corvid family, a species well-known for its intelligence. Past studies have shown that the birds can recognize and remember individual faces for many years. They can also solve complex puzzles and devise innovative tools to complete tasks.
Resources: Newatlas.com, Smithsonianmag.com, Vox.com
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37 Comments
the_rizzler7 monthsthe anti-bird spikes are meant to get rid of the birds, but now they are using them to bring more birds 💀💀💀
pureheart23239 monthsi have always thought that birds one of Gods best creations were smart- mani2910 monthsI learnt a new fact and thats was some birds are ripping out the metal rods and using them to build nests. I never thought or knew of this ever!
- jahanmotiani10 monthsWow!,I haven't seen any birds smarter than these
- dylomyna-16941819697410 monthsbe nice to crows then they will be nice to you in the future
cooladam79011 monthsThose birds must have big IQ🤓
cucidugigibi10 monthsFor real! I wish I had their IQ :((((
penshelf11 monthsWoooow they are so smart! I think they should keep those birds
103184211 monthsWOW!
shadowdragon8711 monthsfun fact: this is Ravenclaw's namesake.
pokepro99811 monthsI think crows could be my spirit animal
