u 



This is reported by Mr. H. S. Shaw, Jr., of Dover, Massa- 

 chusetts, and is the only ease,-so far as my records show, where 

 a red-breasted nuthatch has nested in a bird box. 



Chickadee. — A box hke Fig. 5 or Fig. 12 may be used, 10 by 

 4 by 3^ inches inside dimensions. Long axis vertical. Entrance 



13^ 



3" 



A. 



t|--s'4"--^ 



j 



3" |e--5"---) 



Fig. 12 — Box used by White-breasted Nuthatch. 



hole l\ inches diameter, placed near top of box (Fig. 13). Others 

 recommend an entrance 1| inches in diameter, or less, but my 

 experience goes to show that our chickadee, like the European 

 titmice, prefers an opening a little larger than it needs, which 



43/v' 



17." 



10' 



\0" 



Fig. 13. — Chickadee box and details of construction. 



makes the chances of success better with the larger entrance. 

 Many boxes for this bird have been made with the entrance 

 too small. They are rarely if ever used. 



Bluebird. — Interior dimensions, 4| by 4^ by 9| inches. En- 

 trance, 1| inches or an eighth less — never \\ inches, as most 



