On three different occasions and locations this week I have noticed Baltimore Orioles sharing a tree with Gray-headed Chachalacas.

Could there be a commensal* relationship going on?  Are the Baltimore Orioles benefitting as the big, sometimes clumsy Chachalacas stir up arboreal insects and other invertebrates?  We see a similar type of relationship with cattle and cattle egrets, monkey troops and Gray-headed Tanagers.

Please contact me if you notice this Gray-headed Chachalaca/Baltimore Oriole affiliation:

president@sanvitobirdclub.org

Thanks everyone; Greg.

*Commensal–a relationship between two different organisms, where one benefits and the other is (seemingly) not affected.