![]() It’s been observed in several kinds of birds,” he said. Rather than finding old strips of anti-bird spikes at rubbish dumps, Moeliker, who previously won an Ig Nobel prize for documenting the first known case of homosexual necrophilia among ducks, says crows and magpies appear to be finding and removing the metal strips from buildings. They are described in Deinsea, the annual of the Natural History Museum Rotterdam. “It turns out that it wasn’t,” he said, in view of the latest crow and magpie nests. As an example of birds’ ability to adapt to the urban environment, he considered it the ultimate. The nest was made not from twigs but chicken wire. Nails, screws and even drug users’ syringes have all found their way into birds’ nests.Ībout 25 years ago, Moeliker collected a pigeon’s nest from an oil refinery in Rotterdam harbour, a place he described as having “nothing green, only industry, concrete and bad air”. In 1933, a South African museum reported a crow’s nest fashioned from hard-drawn copper, galvanised iron and barbed wire. It is not the first time birds have been found to incorporate urban materials into their nests. ![]() Photograph: Auke-Florian Hiemstra / Naturalis Biodiversity Center Magpies’ nest made from anti-bird spikes and a strip of the spikes (bottom right). ![]()
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