Marymoor Park

We invite you to see some of the more than 200 bird species that have been observed at Marymoor Park by walking the Audubon BirdLoop, which features the best birding opportunities in the park. More birds are seen at Marymoor every year as other habitat is degraded and Marymoor habitat is upgraded. We have pictures of the more common birds in our new kiosks, along with other wildlife and native plants seen along the BirdLoop.

Check out the brochure below to see how the BirdLoop winds through the grassy meadow, the mysterious thicket, the sheltering forest and the rich marsh, all part of the Marymoor Natural Area.

The BirdLoop then traverses the lush riparian area along the river corridor in the off-leash dog area, ending up at the river kiosk. A side loop circles through the conifer grove near the Clise Mansion and continues on near the community garden and snag row on the way back to the meadow kiosk. Come take a look!


Audubon BirdLoop brochures

Print these out, take them with you on your bird walk, and save us printing costs (developed as part of our $100,000 grant).

Audubon BirdLoop at Marymoor Park
Trail guide, map, and description of what you might see on the loop

Birds of the Audubon BirdLoop
Birding checklist



Habitat Restoration Work Parties at the Audubon BirdLoop


Birding at Marymoor Park (Friends of Marymoor Park website) - weekly reports and pictures of birds seen throughout the park.

Marymoor Park (King County website)


BirdLoop Project History

How our Audubon BirdLoop at Marymoor chapter project got started.

The Audubon BirdLoop at Marymoor Park has been the major Eastside Audubon conservation project for several years.  In July 2006, King County Parks Community Partnerships and Grants (CPG) program awarded $100,000 to Eastside Audubon for a two-year project to upgrade the interpretive trail at Marymoor Park into a world-class BirdLoop.  EAS matched this grant with volunteer hours and money and has pledged to maintain the BirdLoop for the foreseeable future.

Photo: Marymoor Park Birdloop, by Mick Thompson

Photo: Marymoor Park Birdloop, by Mick Thompson

BirdLoop work parties have been held on the first Saturday of every month since March, 2006 in the rain, snow and heat.   

We removed invasive species such as Scotch Broom and Reed Canary Grass in the meadow, along with blackberry vines that were choking out native trees and shrubs. We also planted hundreds of native trees, bushes, grasses, and ground cover in at least ten areas in the meadow. 

Five interpretive signs with lovely artwork were commissioned and installed along the BirdLoop.  We also refurbished two county transit kiosks for the Meadow and River entrances to the BirdLoop.  The Eastside Audubon Photography Group donated bird images for our posters.   

We developed two trail extensions to move the BirdLoop route further from the dog area so our visitors can enjoy the birds in greater quiet.  A gate was installed between the dog area and the meadow.  We also completed the final project in the original grant: building and installing 100 feet of boardwalk extension to keep our feet dry during the winter rains.

Finally, for our bike racks, we commissioned a beautiful sculpture showing a heron in the reeds. 

King County has minimal funds for future work, but we are exploring other sources of funding, including Washington Wildlife and Recreation Program matching funds. 

Our first Saturday native plant and habitat maintenance work parties have continued ever since, and would welcome any help you can give us with funding the work we do.