Strange as it may seem, New York City is a great place for birding. The city may not sleep, and maybe neither do the birds, but nonetheless there are several excellent locations to see a wide variety of species. NYC lies right on the East Atlantic Flyway, the eastern migratory route of the USA. Along it, birds hurtle forth and back twice a year, from tiny warblers to large shorebirds, as they seek winter warmth nearer the equator before returning in summer.
The optimum hotspot is CENTRAL PARK, in particular The Ramble (central) and the secluded Pond / Ravine walk by a pretty stream (north). This is definitely the first place to head for if you have half a day to spare. There’s a very good Central Park website (link above). You’ll also find a CP birding map online, and several websites devoted to birding CP from which you can get or make your own checklist (caution: some sites are a bit… intense). Among books, I have Birds of Central Park by Carl Vornberger and The Ramble: A Wilderness West of 5th by Robert A. McCabe. These are small coffee table books to enjoy rather than field guides, and can be found on Amazon (.com), ABE and occasionally eBay.
It’s worth mentioning PROSPECT PARK BROOKLYN as another good place for birds. It is very large and has plenty of water, which is excellent for water fowl and geese. I’ve seen chipmunks there too (well, I was excited, anyway). There’s the added bonus that the BROOKLYN MUSEUM is right there – perfect for a morning followed by an afternoon in the park.
Here are a few birds photographed in and around the City when temperatures remained below freezing despite a bright sun. There’ll be some more soon.
STARLING BY THE HIGH LINE, LOWER MANHATTAN
NORTHERN MOCKINGBIRD, HIGH LINE
NORTHERN CARDINALS, CENTRAL PARK 
TUFTED TITMICE, CENTRAL PARK
HOUSE SPARROW, CENTRAL PARK
RING-BILLED GULLS, STATEN ISLAND FERRY
HERRING GULLS, STATEN ISLAND FERRY
Helicopter photobomb above the bird!
ROLLING HARBOUR GALLERY 