CHICAGO — At a quiet street intersection in Chicago's Englewood neighborhood, the imposing figure of a pine tree is only outweighed by the massive collection of sticks and twigs carefully placed on ...

Monk parakeets have been flapping around Houston for around 50 years. Having logged just 20 years in the city myself, I feel some reticence calling them an invasive species. Yet, technically, the monk ...

Monk parakeets are highly social birds. These bright green parrots live together in large groups, building sprawling, multifamily stick nests that often include chambers for dozens of individuals.

It happens to you slowly. You might find yourself waking before dawn, a period of a Sunday morning that really ought never to be witnessed, and catching the 6:30 a.m. bus headed somewhere. Blink, and ...

In the urban parks of Barcelona, Spain, the calls of a tropical parrot fill the air. The bright green monk parakeet, native to South America, has found a new home in European cities. Monk parakeets ...

The unfamiliar monk parakeets got to know each other slowly before moving on to behaviors like preening, pictured here. Claire O'Connell Monk parakeets are highly social birds. These bright green ...