Nashville Warbler Warblers Nashville Warbler Oreothlypis ruficapilla Migrating Warblers Daniel Fitzgerald This warbler passes through during migration and is distinctive with its gray head, white eye-ring and yellow throat contrasting with its olive green back.

Wildflower Mount Diablo California Chickory Scientific Name: Rafinesquia californica Family: Asteraceae (Sunflower Family) Blooms: April - May Color: White Annual herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Steven Beatty Steven Beatty Leaf detail

Wildflower Mount Diablo Horseweed Scientific Name: Erigeron canadensis Family: Asteraceae (Sunflower Family) Blooms: Mar - Nov Color: White Annual herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Steven Beatty

Chestnut-backed Chickadee Chickadees, Titmice and Nuthatches Chestnut-backed Chickadee Poecile rufescens All Year Chickadees, Titmice and Nuthatches Daniel Fitzgerald Chickadees and Titmice are smaller small-billed acrobatic birds often found in mixed species flocks while feeding. This species has the chickadee characteristic cap, black bib and white cheeks and the its cap is black. Its back and rump are chestnut colored.

Wildflower Mount Diablo Hairypink Invasive Scientific Name: Petrorhagia dubia Family: Caryophyllaceae (Pink Family) Blooms: Mar - May Color: Red-Pink Annual herb Introduced Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Kevin Hintsa

Wildflower Mount Diablo Wirestem, Rigiopappus, Wire weed, Wireweed Scientific Name: Rigiopappus leptocladus Family: Asteraceae (Sunflower Family) Blooms: April Color: Yellow-Orange Annual herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Steve Beatty

Wildflower Mount Diablo Bittercress Scientific Name: Cardamine oligosperma Family: Brassicaceae (Mustard Family) Blooms: Feb - Apr Color: White Annual or perennial herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Mike Woodring

Wildflower Mount Diablo California Mustard Scientific Name: Caulanthus lasiophyllus Family: Brassicaceae (Mustard Family) Blooms: Mar - Apr Color: White Annual herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Steven Beatty Steven Beatty Leaf detail

Violet-green Swallow Swallows and Larks Violet-green Swallow Tachycineta thalassina Summer Swallows and Larks Daniel Fitzgerald Daniel Fitzgerald A bird of open spaces, open woodlands, and mountain canyons; often seen farther from water than Tree Swallow . Dark, purplish- or violet-green on upperparts. White on side of cheek extends above eye (compare with Tree Swallow). Also note that outer edges of rump are white (visible from above on flying birds). May breed in small colonies. Nests in natural or man-made cavities, including tree cavities, nest boxes, rock crevices, and abandoned woodpecker holes. Eats insects taken in flight.

Western Tiger Swallowtail Papilio rutulus Papilionidae Swallowtails Flies February to November Host Plant Willow, Cottonwood, Sycamore, Elm Nectar Plant California buckeye, Bull thistle Daniel Fitzgerald Daniel Fitzgerald Underwing

Wildflower Mount Diablo Bird's Eye Gilia Scientific Name: Gilia tricolor ssp. tricolor Family: Polemoniaceae (Phlox Familiy) Blooms: Mar - May Color: Blue-Purple Annual herb Native, endemic to California Each pale blue flower is centered in dark purple, with a yellow throat and complemented by blue pollen. You'll find drifts of bird's eye gilia at Deer Flat or along the Waterfall Trail. Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Mike Woodring

Wildflower Mount Diablo Silver Puffs Scientific Name: Uropappus lindleyi Family: Asteraceae (Sunflower Family) Blooms: Nov - Mar Color: Yellow-Orange Annual herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Mike Woodring Flower Mike Woodring Seed pod