Hutton's Vireo Shrikes and Vireos Hutton's Vireo Vireo huttoni All Year Shrikes and Vireos Daniel Fitzgerald Found in pine, oak, and riparian woodlands, often not far from water. Compare with Ruby-crowned Kinglet ; note that Hutton’s Vireo lacks the kinglet’s black patch below the second wing bar. Also note the thicker bill; lores and eye ring are whitish in color, but eye ring is broken above the eye. Nests in trees or shrubs, building a cup shaped structure from moss and spiders silk and lined with fine grasses. Eats mostly insects and spiders; also some small fruits.

Butterflies A-Z Acmon Blue Blues, Coppers, Hairstreaks American Lady Brushfoots Anise Swallowtail Swallowtails Behr's Silvery Blue Blues, Coppers, Hairstreaks Boisduval's Blue Blues, Coppers, Hairstreaks Cabbage White Whites, Sulfurs California Hairstreak Blues, Coppers, Hairstreaks California Pipevine Swallowtail Swallowtails California Ringlet Brushfoots California Sister Brushfoots California Tortoiseshell Brushfoots Callippe Fritillary Brushfoots Checkered White Whites, Sulfurs Columbian Skipper Skippers Common Checkered-Skipper Skippers Coronis Fritillary Brushfoots Echo Azure Blues, Coppers, Hairstreaks Edith's Checkerspot Brushfoots Fiery Skipper Skippers Golden Hairstreak Blues, Coppers, Hairstreaks Gorgon Copper Blues, Coppers, Hairstreaks Gray Buckeye Brushfoots Gray Hairstreak Blues, Coppers, Hairstreaks Great Basin Wood-Nymph Brushfoots Great Copper Blues, Coppers, Hairstreaks Great Purple Hairstreak Blues, Coppers, Hairstreaks Hedgerow Hairstreak Blues, Coppers, Hairstreaks Large Marble Whites, Sulfurs Leanira Checkerspot Brushfoots Lindsey's Skipper Skippers Lorquin's Admiral Brushfoots Lotus Hairstreak Blues, Coppers, Hairstreaks Margined White Whites, Sulfurs Monarch Brushfoots Mormon Metalmark Metalmarks Mountain Mahogany Hairstreak Blues, Coppers, Hairstreaks Mournful Duskywing Skippers Mourning Cloak Brushfoots Muir's Hairstreak Blues, Coppers, Hairstreaks Mylitta Crescent Brushfoots Northern Checkerspot Brushfoots Northern White-Skipper Skippers Orange Sulphur Whites, Sulfurs Painted Lady Brushfoots Pale Swallowtail Swallowtails Propertius Duskywing Skippers Purplish Copper Blues, Coppers, Hairstreaks Red Admiral Brushfoots Rural Skipper Skippers Sachem Skippers Sara Orangetip Whites, Sulfurs Satyr Comma Brushfoots Thicket Hairstreak Blues, Coppers, Hairstreaks Two-tailed Swallowtail Swallowtails Umber Skipper Skippers Variable Checkerspot Brushfoots Western Brown Elfin Blues, Coppers, Hairstreaks Western Pygmy-Blue Blues, Coppers, Hairstreaks Western Tiger Swallowtail Swallowtails Woodland Skipper Skippers

Common Poorwill Owls and Nightjars Common Poorwill Phalaenoptilus nuttallii Summer Owls and Nightjars Arnold Joe Arnold Joe The common poorwill (Phalaenoptilus nuttallii) is found in various habitats across western North America, including areas on Mount Diablo in California. Mount Diablo is known for its diverse ecosystem, including chaparral, oak woodlands, and rocky outcrops, which provide suitable habitat for common poorwills. Common poorwills are nocturnal birds, meaning they are most active during the night. They have a unique habit of hibernating during the winter months, which is uncommon among birds. Their diet consists mainly of insects, particularly moths, beetles, and other flying insects. They hunt for prey during their nocturnal flights. Common poorwills have cryptic plumage that helps them blend into their surroundings, making them difficult to spot during the day. They have large heads, short bills, and wide mouths adapted for catching insects in flight. They typically breed in the spring and summer months. The female lays two eggs in a shallow depression on the ground, usually hidden among vegetation or rocks. Both parents take turns incubating the eggs and caring for the chicks. On Mount Diablo, common poorwills inhabit areas with sparse vegetation, rocky terrain, and open woodlands where they can roost during the day and forage for insects at night. Birdwatchers and wildlife enthusiasts visiting Mount Diablo may have the opportunity to spot common poorwills, especially during the evening and nighttime hours when these nocturnal birds are most active. They are often heard before they are seen, with their distinctive "poor-will" calls echoing through the night air.

Wildflower Mount Diablo Coyote Brush (female) Scientific Name: Baccharis pilularis ssp. consanguinea Family: Asteraceae (Sunflower Family) Blooms: Aug - Nov Color: White Shrub Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Kevin Hintsa Female Kevin Hintsa Male

Wildflower Mount Diablo White Nemophila Scientific Name: Nemophila heterophylla Family: Hydrophyllaceae (Waterleaf Family) Blooms: Mar - Apr Color: White Annual herb Native Common in oak woodlands or under shrubs on shady north slopes and canyons, 400 feet to summit; Mitchell Canyon, Donner Canyon, Sycamore Canyon, Pine Canyon. Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Mike Woodring

Wildflower Mount Diablo Mariposa Lily, Butterfly Tulip Scientific Name: Calochortus venustus Family: Liliaceae (Lily Family) Blooms: May - Jul Color: White Perennial herb Native Found on grassy hillsides, favoring rocky areas; tolerates all exposures; 750 feet to summit. Look for them in Mitchell Canyon and Donner Canyon. Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Kevin Hintsa

Wildflower Mount Diablo California Saxifrage Scientific Name: Micranthes californica Family: Saxifragaceae (Saxifrage Family) Blooms: Feb - Apr Color: White Perennial herb Native Note the whorl of leaves at the base of the stem. This is a feature that identifies many members of the saxifrage family. Look in shady wooded areas throughout the mountain at elevations from 800 to 3500 feet. Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Mike Woodring

Wildflower Mount Diablo Slender Madia Scientific Name: Madia gracilis Family: Asteraceae (Sunflower Family) Blooms: Apr-Jul Color: Yellow-Orange Annual herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Daniel Fitzgerald

Wildflower Mount Diablo Douglas' Silverpuffs Scientific Name: Microseris douglasii ssp. douglasii Family: Asteraceae (Sunflower Family) Blooms: Mar - May Color: Yellow-Orange Annual herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Daniel Fitzgerald

Wildflower Mount Diablo Kellogg's Yampah Scientific Name: Perideridia kelloggii Family: Apiaceae (Parsley-Carrot Family) Blooms: Jun-Aug Color: White Perennial herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Daniel Fitzgerald

Wildflower Mount Diablo Rattan's Monkeyflower Scientific Name: Diplacus rattanii Family: Phrymaceae (Monkeyflower Family) Blooms: May - Jun Color: Red-Pink Annual herb Native, endemic to California Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Daniel Fitzgerald Daniel Fitzgerald Daniel Fitzgerald Mike Woodring

Wildflower Mount Diablo Wood Strawberry Scientific Name: Fragaria vesca Family: Rosaceae Blooms: Feb - May Color: White Perennial Herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Daniel Fitzgerald