There is definitely a lot of good bird watching in San Juan Del Sur between the ocean and Lake Nicaragua, which is right behind it.
A lot of migratory birds go around the isthmus, so it is very good for bird watching.
You will see lots of different tropical birds including the motmot, which is our national bird. You will also see wenches and the occasional spoonbill, which is like a flamingo. Around the last quarter of the year, spoonbills like to come here and to Costa Rica for feeding purposes.