Bird nests made from anti-bird spikes! 🤯 Even for me as a nest researcher, these are the craziest bird nests I've ever seen. Today my paper came out on this rebellious behaviour. And it's like telling a joke...A thread. 🧵 pic.twitter.com/X8dTZICS34— Auke-Florian (@AukeFlorian) July 11, 2023（左から）アウケ・フロリアン・ヒームストラ氏が投稿した、鳥よけスパイクを使ったカラスとカササギの巣Twitter / @AukeFlorian
