In a ‘perfect comeback,’ some birds use antibird spikes to build their nests
Some Eurasian magpies may use the spikes as they were originally intended — to ward off other birds
![A photo of a bird nest made partly out of antibird spikes high up in a tree.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/07/071323_LMZ_bird-nests_feat.jpg?fit=1030%2C580&ssl=1)
A Eurasian magpie nest made partly out of more than 1,500 antibird spikes sits in a sugar maple tree in Antwerp, Belgium.
Auke-Florian Hiemstra