Diane, do a search at
www.Amazon.com for the book "Bull's Birds of New York State" 1998 edition .. and you will be able to read excerpts and reviews and order it if you choose to. The next edition of "Bull's.." will not be out for 2-3 years yet.
Birding in my area?
I am about 30 miles south of Buffalo, NY, so that is a lengthy drive from Long Island.
The areas most known for birding in this general area, bordering Lake Erie at the Canadian border...
Niagara River, Niagara Falls area in Ontario Canada is very well known for Gulls, Raptors, Shorebirds. Very busy place during migration times. To cross over the Peace Bridge into Canada requires 2 pieces of ID, one a birth certificate with raised stamp and one a photo ID.
In Buffalo, NY, is the Tifft Farm Nature Preserve, right on Lake Erie.
Along Route 5 (The Seaway Trail) between Buffalo and the PA State Line, you would go right by Dunkirk Harbor & Pier and Point Gratiot Park which are good birding spots. After Dunkirk comes Lake Erie Sate Park, and Barcelona Harbor & Pier.
The southern end of Chautauqua Lake is a very good spot for birding and duckwatching. There's also the 'Rails To Trails' program if you like hiking. The Chautauqua area could take weeks to fully experience .. there is the Chautauqua Institute and Chautauqua Lake itself; another NY State Park, there is about 30 miles of coastline on the west side and 40 miles on its east side with all sorts of harbors and ports and airfields along the way.
There is also the Fingerlakes area in Central New York State that is great for birding and Fall foliage. At the northern end of the Lakes is the Montezuma Wildlife Refuge (Ithaca, NY, is at the bottom of the lake and MWR is at the top) that has driving tours and walking touirs. Do a search online for Montezuma Wildlife Refuge and you can see for yourself.
For information about Chautauqua area, go here...
http://www.tourchautauqua.com
Especially for Spring Migration, you might want to consider Presque Isle in Pennsylvania. Do a search for "Presque Isle" and you will see for yourself. You'd really need at least a weekend to see it all.