Home » » MCAS Field Trip - SEPT 27 - Oso Flaco Birding for Beginners

MCAS Field Trip - SEPT 27 - Oso Flaco Birding for Beginners

Overlooking Oso Flaco Lake and bank of rushes on left with boardwalk path on right. Sand Dunes in the distance. [photo by Joanne Aasen]
Oso Flaco Lake & Boardwalk [photo by Joanne Aasen]

Morro Coast Audubon Society Presents  


Oso Flaco Birding for Beginners  

September 27, 2026  

8:30am - 12:00pm  

Oso Flaco Lake, Arroyo Grande  

Leaders: Linda Signal & Tony Gayfield  


Description: Explore a rich variety of habitats on a relaxed birding walk at Oso Flaco Lake. Enjoy close-up views of waterfowl—and possibly elusive bitterns and rails—from the boardwalk overlooking the lake and marsh. We'll also bird two prime willow habitats known for attracting returning warblers and other migrants. This trip is intended for beginning and intermediate birders. 


The route includes 2–3 miles of slow-paced walking through riparian woodland, across the lake boardwalk, and into coastal sage scrub. The trail is mostly level, with a mix of boardwalk and packed trail—plus sand if we reach the beach. 


Please bring water, snacks, sunscreen, a hat, binoculars, and field guides (if you have them), and dress in layers for wind and changing conditions. Sturdy shoes are recommended. Restrooms are available at the trailhead.


This trip is ADA accessible. 


Admission: This event is limited to 12 participants. Registrants selected for this event will be notified by email. Do not plan to attend this event until you have received confirmation that you were selected for the event.



Map: https://maps.app.goo.gl/qVChio3zC4vFTN499


Directions: Meet at Oso Flaco parking lot, 3004 Oso Flaco Lake Road, Arroyo Grande. There is a $5 fee for parking (may or may not be in effect).


Questions? Send email to: fieldtrips@morrocoastaudubon.org