Barcelona Birding Point offer birding, wildlife and nature tours just outside Barcelona and the surrounding countryside, as well as further afield including the Pyrenees, Aragon as well as trips to other countries. Barcelona tours range from half a day up to 4 days.
The company was set up by Carles Oliver, an experienced and knowledgable nature guide. A wealth of information is provided on tours from conservation status to how to differentiate similar species.
Their website (in Catalan, Spanish and English) gives full information on all tours including availability – as well as great photos.