However, these canoe rides actually focus on the more visible bird life along the river banks egrets, ducks, storks, kingfishers, eagles, and scores of other fascinating birds.
However, these canoe rides actually focus on the less visible reptile life. 
mnli hypothesis: However, these canoe rides actually focus on the less visible reptile life.  premise: However, these canoe rides actually focus on the more visible bird life along the river banks egrets, ducks, storks, kingfishers, eagles, and scores of other fascinating birds.