| Species | Date | Count | Location | Observer | Checklist |
|---|---|---|---|---|---|
| peep sp. Calidris sp. (peep sp.) | 18th May 2025 8 a.m. | 1 | Pelagicas Costa Cascais Cascais, Lisboa | Nelson Pereira | |
| Audouin's Gull Ichthyaetus audouinii | 18th May 2025 8 a.m. | 1 | Pelagicas Costa Cascais Cascais, Lisboa | Nelson Pereira | |
| Yellow-legged Gull Larus michahellis | 18th May 2025 8 a.m. | X | Pelagicas Costa Cascais Cascais, Lisboa | Nelson Pereira | |
| Lesser Black-backed Gull Larus fuscus | 18th May 2025 8 a.m. | X | Pelagicas Costa Cascais Cascais, Lisboa | Nelson Pereira | |
| Cory's Shearwater Calonectris borealis | 18th May 2025 8 a.m. | 10 | Pelagicas Costa Cascais Cascais, Lisboa | Nelson Pereira | |
| Balearic Shearwater Puffinus mauretanicus | 18th May 2025 8 a.m. | 30 | Pelagicas Costa Cascais Cascais, Lisboa | Nelson Pereira | |
| small shearwater sp. Puffinus sp. | 18th May 2025 8 a.m. | X | Pelagicas Costa Cascais Cascais, Lisboa | Nelson Pereira | |
| Northern Gannet Morus bassanus | 18th May 2025 8 a.m. | X | Pelagicas Costa Cascais Cascais, Lisboa | Nelson Pereira | |
| Barn Swallow Hirundo rustica | 18th May 2025 8 a.m. | 2 | Pelagicas Costa Cascais Cascais, Lisboa | Nelson Pereira |
1, peep sp.(Calidris sp. (peep sp.))
1, Audouin's Gull(Ichthyaetus audouinii)
X, Yellow-legged Gull(Larus michahellis)
X, Lesser Black-backed Gull(Larus fuscus)
10, Cory's Shearwater(Calonectris borealis)
30, Balearic Shearwater(Puffinus mauretanicus)
X, small shearwater sp.(Puffinus sp.)
X, Northern Gannet(Morus bassanus)
2, Barn Swallow(Hirundo rustica)