They have feral populations in several parts of Brooklyn. We went to see the ones near the "Dust Bowl" baseball field and park by 65th street in Bay Ridge. They survive the cold New York City winters by building their communal nests on power poles or near transformers to keep warm. In the spring time they can be observed preening, feeding, and frolicking in the trees surrounding their nests. Their green color, long tails, and quaking calls cannot be mistaken for any native species.

Monk Parakeet preening on platform railing

Taking a peak out of the nest

Starling

Monk Parakeet flying back to nest

Then landing and climbing in

Pair of Monk Parakeets preening themselves

And then each other

Taking off

Getting the belly

Staying close together

Getting fluffy

Hello

Can't quite reach

Cute couple

Parakeet kisses

Male House Sparrow

And Female House Sparrow not far beyond
And finally, a video so you can see/hear what it's like to visit the wild feral quaker parrots of Brooklyn: