Bird watching in Aveiro

I'm a professional tour guide and a bird and nature lover. I've grown up in this city, so I Know the best places to watch them within a hike tour (not more than 4km). We'll be visiting the famous Aveiro's salt pans, and the surroundings. This you'll be able to see the best spots at an walking range to see the most iconic birds of Aveiro. There's no other tour like this one in Aveiro, specific for birds lovers.