Rock pigeons and urban corvids have become familiar residents of large cities. Urban environments—from architectural structures to food availability and the presence or absence of predators—provide these species with resources that significantly shape their population size and even their behavior. Humanitarian Media Hub summarizes scientific insights into why these birds thrive in city landscapes.
Urban buildings recreate natural “rocky” conditions
Rock pigeons descend from wild cliff-dwelling pigeons, and modern cities have essentially become an artificial replica of their original habitat.
“By their nature, pigeons are cliff‑dwellers,” explains ornithologist Natalia Atamás in an interview with RBC-Ukraine. She notes that in cities, pigeons search for similar conditions and easily find them “in attics, enclosed niches or other hard‑to‑reach places.”
Villages, on the other hand, have fewer buildings. Most rural structures are lower, have open attics, and lack architectural features that would offer pigeons sufficient shelter.
City food is abundant, and the risks are lower
Urban spaces offer a stable food supply for pigeons. Food scraps left by passersby, open garbage bins and regular feeding by people create favorable conditions for colonies to grow.
“Unlike sparrows, pigeons find everything they need in the city. They feed at waste sites, and even when they carry pathogens, they rarely get sick themselves,” says ornithologist and Frankfurt Zoological Society environmental education coordinator Hanna Kuzio in her interview with RBC‑Ukraine.
She adds that urban pigeons nest in warm attics and have constant access to food, which allows them to reproduce up to seven or eight times a year. These conditions rapidly increase their numbers.
Outside cities, in the “wild,” such birds breed only during the warm season.
Urban conditions boost not only pigeon populations
Corvids also take full advantage of urban ecosystems. Hooded crows, rooks, jackdaws and magpies adapt especially well to cities. They now live even in city centers and show far less fear of humans.
Urban areas offer corvids the same advantages as pigeons: sheltered nesting spots, abundant food, fewer predators and warmer microclimates.
Rural areas, by contrast, have more natural predators, fewer human‑generated food resources and far fewer safe nesting opportunities.
Urbanization has even changed seasonal migration patterns.
“For crows that have settled in dense urban areas, the winter food supply is sufficient, so their need to migrate disappears,” explained ornithologist Vasyl Kostyushyn, head of the Monitoring and Wildlife Protection Department at the Schmalhausen Institute of Zoology, in a comment to Telegraph.
He adds that skipping migration becomes an additional factor increasing their population: without spending time on seasonal movements, crows begin nesting earlier in spring.
How to help birds and stray animals in winter: advice from experts
