166 



after we had them arranged to our satisfaction and had 

 stepped back, one of them flew away after food. He was 

 back very quickly and at once went to feed the little birds, 

 while his mate started off to hunt too. They continued this 

 routine for a long time, one going as soon as the other came 

 in sight. 



Fig. 143. T/iis is one of the failures, but it shows the amount 

 of movement that occurred in 1-lOU of a second, — icings from 

 side to their highest point. 



Our illustrations show a picture of father Chippy as nc 

 pushed a whole beak-full of plant lice down the throat or 

 one of his offspring and also of the mother as she deliverea 

 her antidote for hunger. You will notice that in both these 

 pictures there is a. 'vacant chair' ; one of the little fellows 



