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San Gregorio SB
Illustrated Checklist
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Native and Naturalized (48)
Hybrids (2)
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescensLast observed by Marty Freeland on 4 Feb 2024
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensLast observed by Marty Freeland on 4 Feb 2024