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RN Estuário do Sado--área geral
Illustrated Checklist
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Native and Naturalized (229)
Exotic: Provisional (1)
Exotic: Escapee (5)
Additional Taxa (15)
- Black-headed/Mediterranean Gull Chroicocephalus ridibundus/Ichthyaetus melanocephalusLast observed by Carlos Pereira on 28 Jan 2006
- Yellow-legged/Lesser Black-backed Gull Larus michahellis/fuscusLast observed by Sara Gomes on 2 Jan 2023