Date: 3/29/26 6:14 pm From: David Assmann via groups.io <david_assmann...> Subject: [SFBirds] Fort Mason Local Interest
Seasonal changes are in full swing at Fort Mason. YELLOW-RUMPED WARBLERS, TOWNSEND'S WARBLERS, RUBY-CROWNED KINGLETS (the few that are left), HERMIT THRUSHES, GOLDEN-CROWNED SPARROWS and FOX SPARROWS, to name just a few, are all singing. A number of species, including SONG SPARROWS, RED-TAILED HAWKS, NORTHERN MOCKINGBIRDS, and WESTERN BLUEBIRDS are nest-building. A pair of Bluebirds were passing nesting material back and forth to each other this morning, and ferociously defending their nest by chasing any EUROPEAN STARLING that came close. The Red-breasted Sapsuckers have left. The SUMMER TANAGER is now almost completely red, and the hybrid BULLOCK'S x BALTIMORE ORIOLE is now singing frequently, sounding just like a Baltimore Oriole. The WESTERN TANAGER continues, and a number of HOODED ORIOLES have arrived. Migrants have been trickling through, with a PALM WARBLER bobbing its tail in the Battery on the 21st, a WESTERN KINGBIRD on the 23rd and 28th, a NORTHERN YELLOW WARBLER on the 25th, a very early ASH-THROATED FLYCATCHER on the 27th (it made a ka-brick call before landing briefly on the north fence of the garden), and a WESTERN WARBLING VIREO today.
