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Robert Siegel
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Alum Rock State Park
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January 25, 2026Alum Rock State Park Bioblitz
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June 2, 2024 - Alum Rock State Park Bioblitz
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February 13, 2022 - Alum Rock Sonoran Blue Outing
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March 13, 2021 - Alum Rock State Park Bioblitz
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January 12, 2020 - Alum Rock State Park Bioblitz
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December 8, 2018 - California Lichen Society retreat
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January 26, 2018 - Alum Rock State Park Bioblitz
January 25, 2026Alum Rock State Park Bioblitz
Bobbing along
Hunting
Oxalis
Fern
Mini-cairn in the creek
Bioblitz group
Alum Rock Bioblitz
Alum Rock State Park
January 25, 2026
Pixel 10 Pro XL
Paul
Alum Rock Bioblitz
Alum Rock State Park
January 25, 2026
Pixel 10 Pro XL
Attentive docents
Alum Rock Bioblitz
Alum Rock State Park
January 25, 2026
Canon R5m2
Sycamore Grove sign
Captive king snake
Alum Rock Bioblitz
Alum Rock State Park
January 25, 2026
Canon R5m2
Mountain lion - stuffed
Alum Rock Bioblitz
Alum Rock State Park
January 25, 2026
Canon R5m2
June 2, 2024 - Alum Rock State Park Bioblitz
Variable checkerspot
Oak leaf miner
()
Family: ()
Alum Rock State Park
Bioblitz
June 2, 2024
Canon 7dmark2
()
Family: ()
Alum Rock State Park
Bioblitz
June 2, 2024
Canon 7dmark2
February 13, 2022 - Alum Rock Sonoran Blue Outing
Hoverfly on oxalis
()
Family: ()
Alum Rock State Park
Bioblitz
February 13, 2022
Canon 7dmark2
Millipede
()
Family: ()
Alum Rock State Park
Bioblitz
February 13, 2022
Canon 7dmark2
Lichen
()
Family: ()
Alum Rock State Park
Bioblitz
February 13, 2022
Canon 7dmark2
Lion's mane
()
Family: ()
Alum Rock State Park
Bioblitz
February 13, 2022
Canon 7dmark2
Male
Face off
Close encounter
January 12, 2020 - Alum Rock State Park Bioblitz
Checking things out
Sharp tail
Blunt head
Piano belly
Uroctonus
Stinger
Super salamander
Stellar performance
Stellar
A corny flight
Nutty
Ravin'
"What? I have feet?"
Caption credit: Deb Kramer
(Cibdelis)
Family: Tenebrionidae (darkling beetles)
Alum Rock State Park
January 12, 2020
Canon 7dmark2
Bob shooting
Bob
Family: Siegel
Photo credit: Jennifer Rycenga
Alum Rock State Park
January 12, 2020
Canon 7dmark2
Bay laurel buds
Digger gone gray
Cone
Cricket skull
Bermuda buttercup
Build me up
Fossils
Live-forever
Stone bridge
Fungus
Gallable
Tarnished
Wild oats
Stalks
()
Family: Poaceae (grasses)
Alum Rock State Park
January 12, 2020
Canon 7dmark2
When the water in the stream rose
Rose ()
Family: Roseacea (roses)
Alum Rock State Park
January 12, 2020
Canon 7dmark2
Orientation
'More leaves
Photographing a scorpion
January 26, 2018 - California Lichen Society retreat
A bunny thing happened
Mourning in morning
Moth
Moth
Star of the earth
Liverwort
Liverwort close
Shelf fungus
Shelf fungus close
Stone crop
Stone bridge
Bridge
Tree and bridge
Underworld entrance
Lichen
Small lichen
Lichen in hand
If the Blarney stone was made of lichen
Tom Carlberg
Alum Rock State Park
January 26, 2018
Canon 7dmark2
Gibbous this day
December 8, 2018 - Alum Rock State Park Bioblitz
Purple fungus
Tree fungus
Gilled mushroom
Orange millipede
Pink millipede
Sycamore bark
Oxalis
Cat tails
Ivy
Fossils
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Last modified: January 27, 2026
Created: January 26, 2018 (from coyotehills.html)
Contact: siegelr@stanford.edu
All pictures are protected by copyright. Do not use without permission.
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