On Monday and Tuesday nights I watched Chimney Swifts enter the 230 Central Park West chimney. On Monday, it was from a roof on Columbus Avenue and on Tuesday, it was from Central Park. It was reported that this location had over 3,000 swifts roost here last week!

I counted 307 going to roost on Monday and 204 on Tuesday. Historically, this is when you would expect the swifts to be leaving the area and going further south, so this makes sense.

By accident on Tuesday morning, I found a spot (40.7831450, -73.9676067) where you could watch the chimney. Much to my surprise about 30 swifts left the roost around 10 am, confirming it was the correct one. I suspect with the cold weather, they were in no rush to leave their roost!