Teacher's Leaflet. 



841 



appearance; its red-brown vest and 

 iridescent blue coat with the deeply 

 cut coat tails give it an elegance of 

 style which no other bird, not even 

 the Cedar Wax Wing, can emulate. 



Lesson XLIX. 



THE BANK SWALLOW. 



Purpose. — To induce the pu- 

 pils to study more carefully the 

 nests and the habits of this bird. 



Method. — Have the pupils 

 make individual observations on 

 a colony of these birds, giving 

 them the following list of ques- 

 tions to fill out in the field: 



Observations: 



(i). Where do the bank swal- 

 lows build? 



(2). What sort of soil do they 

 choose ? 



(3). How far do their tunnels 

 extend into the bank? 



(4). What is the diameter of 

 one of these tunnels? 



(5). Do the tunnels extend 

 straight in or do they rise or 

 deflect? 



(6). With what tools is the 

 tunnel excavated? 



(7). Where is the nest situated 

 in the tunnel and how is it lined ? 



(8). How many nests are 

 there in the bank which you are 

 studying? 



(9) How can you distinguish 

 by its appearance the bank 

 swallow from the barn and eave swallows? 



(10). How can you distinguish it from the rough- winged swallow? 



(11). How can you distinguish it from the tree swallow? 



Photo by J. T. L^yd. 

 A tree swallow entering her nest.. 



