Jewel Lake, Tilden Nature Area, Berkeley Thursday September 1, 7:30am - 11:30am A short walk along Wildcat Creek and around Jewel Lake in Tilden Park. Possible highlights include fall warblers, Red-breasted and Pygmy Nuthatch, Pacific Wren, and maybe an early Varied Thrush. Hike Rating:  Category 1 - Easy Elevation change:  slight Leader:  Matt Tarlach, 925-482-6129 […]

Antioch Dunes National Wildlife Refuge--Docent-led public tour Saturday, September 10, 10 AM to 11 AM MDAS Coordinator:  Hugh Harvey Antioch Dunes is the only unit of the National Wildlife Refuge system in Contra Costa County.  It was set aside for two plants and a butterfly; Contra Costa Wallflower, Antioch Dunes Evening Primrose and Lang's Metalmark […]

Vaux's Swifts at McNear Brickyard Thursday, September 15, 5 PM to dark Leader: Hugh and Rosita Harvey, 925-935-2979 Every fall when Vaux's Swifts fly to Central and northern South America, they pass through the Bay Area and take advantage of chimneys for evening roosts.  Two well-known locations are in Healdsburg and San Rafael.  Due to […]

Hayward Regional Shoreline - Frank's Dump Saturday September 17, 2:30pm - 5:30pm We will meet at the very end of Winton Ave, walk out to the Bay Trail and head north. We should arrive at Frank’s Dump - a major high tide roost for shorebirds - when the tide has been coming in for about 4 […]

Birding by Bike at Clifton Court Forebay Saturday September 24, 2022, 7:30am-1:30pm Have a bicycle, e-bike or scooter, and like to bird? Join MDAS at Clifton Court Reservoir in eastern Contra Costa County, where we will do an out-and-back biking/birding trip of approximately 10 miles on a flat, paved levee road to see a myriad of bird species. Those who are equipped for it […]