Unusual Nesting Sites for Barn Swallows. 



Swallows nested on blocks nailed under eaves of 

 coast guard boathouse on left; also on nails driven 

 in supports of plank walk and wharf. Cross is di- 

 rectly over position of nest. (Photograph taken by 

 Dr. B. H. Warren at Wallop's Island, Virginia.) 



Successful Rough Nesting Boxes. 



A few of the boxes made and put up at Wallop's Island, 

 Virginia, fully 90 per cent of which were occupied 

 by birds. (Photograph by Dr. B. H. Warren.) 



A nesting box that may 

 be opened in one 

 second. (See page 

 91.) 



Barn swallows' nest rest- 

 ing on two wire nails 

 driven into round tim- 

 ber in barn cellar. 



