Gonçalo Elias

• 100 Best Birding Hotspots in the Algarve
• Atlas das aves invernantes do Baixo Alentejo
• Aves de Portugal
• Aves de Portugal Continental
• Aves Do Alentejo
• Birding Hotspots in Andalusia
• Birding Hotspots in the Alentejo
• Birding Hotspots in the Algarve
• Birding in Lisbon
• Birds of Portugal
• Birdwatchers' Guide to Portugal
• Onde Observar Aves Em Lisboa