“It is not a battle between humans and pigeons,” Dr Marco Pellizzari insists.
The Italian veterinarian is standing in a Barcelona park, watching the birds eat.
But unbeknown to the pigeons, their feed has been laced with the drug nicarbazin.
Just 10g of corn eaten daily will render both female and male birds temporarily infertile after five days, laying eggs that will not hatch.
Read more: https://www.telegraph.co.uk/news/2026/05/19/the-battle-to-put-pigeons-on-the-pill/
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