Big Year Jeffco

Big Year Logo_small

Jefferson County is home to an abundant variety of bird species. To celebrate and preserve these species and their habitats, we are excited to offer a Big Year in 2018. 

Join fellow community birders in identifying by sight or sound the largest number of species of birds within Jefferson County between January 1 through December 31, 2018. 

To participate:

Register on Eventbrite

Start an account through eBird to track your progress

Birds We Are Seeing

Mountain Chickadee

Black-capped Chickadee

​Both are small seed eating birds with small pointed beaks. They have black caps and bibs (throat), white cheeks, grey backs and wings, and are whitish on their underside.

​The Mountain chickadee has a white stripe (eyebrow) above the eye and can be found in evergreen forests and higher elevations.

The Black-capped chickadee has buff to orange sides. They feed in groups in mixed vegetation.

Mountain Chickadee

Mountain chickadee

Black-capped Chickadee

Black-capped chickadee


January 10, 2018 6-7:30 p.m.:
Big Year Jeffco Kick-off Open House

Stop by the Jeffco Open Space office any time to mingle fellow birders, find out about the birds in Jefferson County, sign up for volunteer opportunities and more!

January 17, 2018 6-7:30 p.m.:
Birding by Ear
Mary Ann Bonnell, Visitor Services Manager, Jeffco Open Space, will teach us how to identify our local birds by their calls, tweets and chirps! This class is geared towards beginning and experienced birders. Ages 16 and up.

February 3, 2018 9:00 a.m.-noon:
Great Backyard Bird Count (GBBC) Family Training at Lookout Mountain Nature Center
An interactive training event for the whole family. Audubon staff members will be available to teach you about the beautiful birds of the Colorado winter and help you practice using bird identification tools such as binoculars, field guides or your smart phone.