"Not much Harry. The martin is such a universal favorite that Wilson says he never knew but one man that did not like them and treat them kindly. Wherever they go they find some hospitable retreat prepared for their recep-tion. Some people have large habitations formed for the martins fitted up with a variety of apartments and conve-niences; these houses are regularly occupied every spring and the same individual birds have been known to return to the same box for many successive years.