2024 Christmas Bird Count Purisima. Christmas bird counts (cbcs) have been a holiday tradition for well over 100 years. The audubon christmas bird count takes place every year at the end of december and start of january.

The 124 th christmas bird count (cbc), sponsored by the national audubon society, conducted between december 15, 2023, and january 6, 2024, is now history. The christmas bird count is a national survey of winter bird populations of north america run by the national audubon society.