Strange nests of crows with industrial materials, according to researchers, crows use industrial materials to make anti-bird nests.

Strange nests of crows: Birds have long been known to use human rubbish in constructing their nests, but even experts have been surprised by the latest findings from urban crows and magpies.

Nests recovered from trees in Rotterdam and Antwerp were found to be constructed almost entirely from strips of long metal spikes usually attached to buildings to deter birds from nesting.

The discovery led researchers in Rotterdam and Leiden to scour the internet for further examples, leading to the identification of another anti-bird spike nest in Glasgow.

One of the reviewers of the study then flagged a fourth nest in Enschede in the Netherlands.
The crows used the anti-bird spikes as a sturdy construction material, while the magpies placed most of the spikes on the nest’s roof to deter predators.

The birds were found to be ripping the metal strips from buildings.

Strange nests of crows with industrial materials

The use of anti-bird spikes in bird nests is an unusual and fascinating adaptation of urban birds to their environment.
The spikes are usually installed on buildings and other structures to prevent birds from perching or nesting on them.
However, crows and magpies have found a way to turn this human-made deterrent into a construction material for their nests.

Strange nests of crows-3
image source: Arterra/Universal Images Group/Getty Images

The nests constructed from the anti-bird spikes were found in Rotterdam and Antwerp, and a further two nests were identified in Glasgow and Enschede.
The birds were observed ripping the metal strips from buildings and using them in their nests. While crows used the spikes as a construction material, magpies placed most of them on the nest’s roof to deter predators.

The discovery of these nests has surprised even experts in the field, who have never seen anything like it before. The researchers who made the discovery believe that it is a testament to the birds’ adaptability to the urban environment. Birds have long used human rubbish in their nests, but the use of anti-bird spikes is a new and innovative adaptation.

The use of human-made materials in bird nests is not a new phenomenon. Birds have been known to incorporate all sorts of human rubbish, including nails, screws, and even drug users’ syringes, into their nests.
However, the use of anti-bird spikes is a unique and impressive adaptation.

The discovery of these nests highlights the importance of studying urban birds and their behavior.
As more and more of the world’s population moves into cities, it is essential to understand how wildlife adapts to urban environments.
The study of urban birds can provide insights into how animals adapt to changing environments and may help us to better understand how we can coexist with wildlife in urban areas.

Overall, the discovery of bird nests constructed from anti-bird spikes is a fascinating and unexpected finding that highlights the remarkable adaptability of urban birds.
It is a reminder that wildlife can surprise us with its ingenuity and resourcefulness and that we still have much to learn about the world around us.


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