FALMOUTH — Bird enthusiasts are fanning out across Maine to record their bird sightings as part of the National Audubon Society’s annual Christmas Bird Count.

The event, now in its 113th year, kicked off nationally on Friday. Bird-watching groups with Maine Audubon began their bird-counting excursions in Maine on Saturday.

In all, more than 30 groups will take to the field between Saturday and Jan. 1 to record their observations in Maine. The results are sent to the National Audubon Society to track the migratory patterns of birds.

About 63,000 volunteers participated last year in all 50 states, Canada, Latin America, the Caribbean and the Pacific islands, with Maine birders counted nearly 13,000 birds.