| 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 |