The Nest-Hole of the Bluebird 



117 



away, but later drawn up to a distance of about eighteen inches. 

 After concluding these operations, I had to wait longer for the 

 parent bird to come again. When one considers that the nest- 



Fig. 68. Female Bluebird carrying grasshopper to young. 



ing branch was suddenly moved fifty feet from its original 

 position and fixed on the ground, and that a tent was then 

 pitched so close to it that the birds could not fly straight to the 

 entrance but had to flit first to the trunk and then go around 



