Park Alerts [updated on 04/27/21]
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The Summit and Mitchell Canyon Visitor Centers are open with limited hours and capacity.
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All park visitors must distance themselves from others by the required 6 feet. Stay Safe.
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Water Shortage: All visitors are encouraged to bring water for consumption during their visit. Plan Ahead.
Take a Multimedia Tour of Mount Diablo
PRESERVATION THROUGH EDUCATION
Behr's Silvery Blue
Glaucopsyche lygdamus
incognitus
Lycaenidae
Blues, Coppers, Hairstreaks
Flies
March to May
Host Plant
Lupine, Legumes, Vetches
Nectar Plant
Daniel Fitzgerald
Female
Male
Daniel Fitzgerald
Daniel Fitzgerald
Underwing
