About

Ecological Expertise

Since the founding of Colibri in 2010, we have planned, overseen, managed, coordinated, and carried out biological resource investigations throughout California and the northern Gulf of Mexico.

Our scientists are distributed among six locations in California and have a particularly detailed knowledge of flora and fauna of the San Joaquin Valley and its surrounding foothills and mountains.

Some of the special-status species we deal with most often include:

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Plants

  • Bakersfield cactus
  • California jewel flower
  • Hairy Orcutt grass
  • Kern mallow
  • Mariposa pussypaws
  • San Joaquin adobe sunburst
  • San Joaquin woolly threads
  • Succulent owl’s-clover
  • Tree anemone
Colibri Ecological Consulting LLC

Invertebrates

  • Bay checkerspot butterfly
  • Mission blue butterfly
  • San Bruno Elphin butterfly
  • Valley elderberry longhorn beetle
  • Vernal pool fairy shrimp
  • Vernal pool tadpole shrimp
Colibri Ecological Consulting LLC

Amphibians

  • California red-legged frog
  • California tiger salamander
  • Foothill yellow-legged frog
  • Limestone salamander
  • Santa Cruz long-toed salamander
  • Sierra Nevada yellow-legged frog
  • Western spadefoot
  • Yosemite toad
Reptiles

Reptiles

  • Alameda whipsnake
  • Blainville’s horned lizard
  • Blunt-nosed leopard lizard
  • Giant garter snake
  • San Francisco garter snake
  • Western pond turtle
Birds

Birds

  • Bald eagle
  • Burrowing owl
  • Golden eagle
  • Great gray owl
  • Northern goshawk
  • Spotted owl
  • Swainson’s hawk
  • Tricolored blackbird
Mammals

Mammals

  • Buena Vista Lake shrew
  • Fisher
  • Giant kangaroo rat
  • Mohave ground squirrel
  • Salt marsh harvest mouse
  • San Joaquin antelope squirrel
  • San Joaquin kangaroo rat
  • San Joaquin kit fox
Colibri Ecological Consulting LLC

Leadership Team

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LAURA R. DAVIS, M.A. Chief Executive Officer

Laura worked for 20 years in public education in Fresno and Marin counties as a teacher and administrator....

Jeff D

JEFF N. DAVIS, B.S. Principal and
Chief Operating Officer

Jeff has been a student of natural history for as long as he can remember. He spent much....

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CATHERINE D. DUNLAP, B.A. Operations Manager

Catherine was born and raised in Fresno, California. She earned a Bachelor of Arts degree in English Literature....

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RUBY R. REBENSDORF, B.S. Staff Scientist and
Assistant Project Manager

Ruby has always enjoyed being outdoors, and growing up in Fresno gave her many opportunities...

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PATRICK N. SAULS, M.S., AICP Senior Scientist and Project Manager

Patrick is an environmental planner and project manager with 20 years professional experience. He grew up in Southern...

RYAN R. SLEZAK, M.S.

RYAN R. SLEZAK, M.S. Senior Scientist and
Project Manager

Ryan is a biologist with about 15 years of professional experience. Growing up in the forests of Northern…

Full-Time Team Members

Graham Biddy02

GRAHAM L. BIDDY Senior Scientist

Graham has been working as a wildlife biologist for more than 10 years. He developed his conservationist mindset…

Jacob H Bollinger

JACOB H. BOLLINGER, M.S. Field Scientist

Jacob grew up in the forested hills of south-central Indiana where he developed a passion for wildlife by exploring his backyard ...

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HOWARD O. CLARK, JR., M.S. Senior Technical Specialist

Howard has more than 20 years of professional wildlife and research experience. He is certified by the Ecological…

Cassie M. Contreras (1)

CASSIE M. CONTRERAS, B.S. Field Scientist

Cassie grew up in Fresno, California, where she spent much of her childhood outdoors in the Sierra. Her love of the natural...

Stephanie Doria (2)

STEPHANIE L. DORIA, M.S. Field Scientist

Stephanie grew up in Visalia, just down Highway 99 from Fresno. As a child she spent her mornings waking up early to...

New Project (100)

MICHELLE L. HARRIS, B.S. Field Scientist

Michelle grew up in Sanger, California, where the Sierra foothills were her backyard. While attending Reedley College... 

Carly Haywood Photo (1)

CARLY J. HAYWOOD, M.S. Field Scientist

Originally from Illinois, Carly spent six years working around the country in a variety of habitats, from...

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SARAH A. JACOBSEN, B.S. Field Scientist

Sarah grew up in Mariposa, California, just outside of Yosemite National Park. She developed...

Samantha Love photo

SAMANTHA M. LOVE, B.S. Field Scientist

Samantha developed a passion for botany and wildlife at a young age. She grew up in the high desert...

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KATHERINE P. PHILLIPS, B.S. Field Scientist

Katherine grew up on a farm in the Central Valley,
where her love of the outdoors began.

CAMERON A. REID

CAMERON A. REID, B.S. Field Scientist

Cameron grew up spending time outdoors through his involvement in Boy Scouts of America. Those experiences left him...

Antonio Ruvalcaba

ANTONIO RUVALCABA, B.S. Field Scientist

Antonio grew up in Fresno, California. Inspired by family trips to nearby Yosemite National Park, he fell in love with...

Stephanie Santana

STEPHANIE G. SANTANA, B.S. Field Scientist

Stephanie is from Sacramento, California. As a child she spent most of her time outside, sharing her discoveries...

REBECCA

NORMAN “RANDY” SISK, M.S. Senior Technical Specialist

Randy is a wildlife biologist who specializes in herpetology. His interest in herpetology
began as...

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Jackson Xiong, B.S. Field Scientist

Jackson began his wildlife career as a youth running the forests and hills of the Sierra Nevada, turning over rocks and climbing …

Natalie Yorba profile pic

NATALIE YORBA, M.S. Field Scientist

Natalie grew up in San Diego, California.  As a kid she preferred animal documentaries over cartoons...

On-Call Team Members

ROB-K.-BURTON,-PH.D.

ROB K. BURTON, PH.D. Senior Scientist

Rob has worked with wildlife for over 30 years. His interests have included a broad diversity of species such as California...

PHILLIP J. CAPITOLO, B.S.

PHILLIP J. CAPITOLO, B.S. Senior Scientist

Phil is a biologist with more than 20 years of experience studying a variety of North American bird taxa,….

PETER A. GAEDE, B.S.

PETER A. GAEDE, B.S. Senior Scientist

Peter is an ecologist with more than 15 years of experience. He has conducted fieldwork for consulting and research…

DAVID B. LEWIS, B.A.

DAVID B. LEWIS, B.A. Senior Scientist

Dave has more than 40 years of experience in the biological sciences, including 35 years of field experience…

MICHAEL W. PARKER, M.S.

MICHAEL W. PARKER, M.S. Senior Scientist

Mike has over 25 years of natural resource management, research, and consulting experience throughout the western U.S. with…

KRISTY-L.-USCHYK,-B.S.

KRISTY L. USCHYK, B.S. Senior Scientist

Kristy has worked as a wildlife biologist for over 20 years. She has worked on a wide array of projects including coastal…

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