A campaign to shoot crows has resumed in Singapore in response to a surge in public complaints about attacks, with authorities saying “pest” birds pose a public health risk and outcompete native species.Ecologists argue Singapore’s crow problem is human-made, with poor waste management and illegal feeding fueling a population boom.They criticize culling as ineffective over the long term and say it risks normalizing lethal wildlife control while undermining Singapore’s “City in Nature” vision.Nature groups say ongoing and planned forest clearance for public housing could lead to further increases in urban bird populations, as more favorable habitats are created, leading to “endless culling” to control bird populations.

SINGAPORE — On a Friday afternoon in July, a pest control officer patrols the grounds of Sungei Tengah Lodge, Singapore’s largest dormitory for migrant construction workers, picking up birds in various stages of distress. Some are twitching, others are wobbling, as if drunk.

The officer tosses the birds, which he had poisoned with baited scraps a few hours earlier, into a garbage bag. Most of them are still alive. The bagged birds will later be gassed using carbon dioxide, a culling method for “pest” birds the authorities say is “humane” — a claim contested by animal welfare groups.