Huntington New York Chicken Ordinance

198-13(B)(4):
The keeping or raising of dogs, cats, small animals and birds commonly considered to be household pets, including pigeons, chickens and ducks but excluding cattle, roosters, mink, other domestically maintained fowl and exotic animals as provided in § 78-25. Such activity shall be clearly accessory and incidental to the principal residential use, and the breeding, keeping or raising of such animals or pets as a business activity shall not be permitted. No structure, fenced run or other enclosure for the shelter of such animals or pets shall be located within a required front yard nor within twenty-five (25) feet of any side or rear lot line.
[Amended 2-10-2009 by L.L. No. 2-2009; 2-9-2010 by L.L. No. 2-2010]

FYI: Coops are considered accessory structures and will require necessary permits. I have just gone through a very painful and expensive process to apply for a permit thanks to a meddling neighbor. Read through the code carefully. I tried to call it a shed which doesn't require a permit under 100 square feet but that did not work.

78-26 All structures in which pigeons, chickens and ducks are kept are considered accessory structures and shall require all necessary permits.