Count Year (abbreviated CY) refers to the Nth year of the Audubon Christmas Bird Count Event. The first CBC was held on Christmas Day 1900, and therefore, is noted as CY 1. The most recent season, CY 103, was held during Christmastime 2002-03. CY is used to facilitate simplicity in database management and data query presentation. This is done by using a o1-3 digit number instead of a hyphenated 6-8 digit number.