i8o 
WILD WINGS 
from the eggs, or try to crawl back farther among the 
rocks, but we can probably catch her and replace her. A long 
timed exposure is necessary, so the camera is set upon the 
BLACK GUILLEMOT OVER HER EGGS 
tripod and focused on the bird. The greatest difficulty is 
that she is apt to turn her head at the critical moment. One 
may spoil a plate or two, but a few exposures of from five to 
ten seconds will probably give some good negatives. Look 
out for accidents : a rock may suddenly slide and roll; the 
camera mav slip and fall on its face on rocks that are not 
soft; the bird may make a sudden exit, and the photographer 
must be ever ready to seize her, without wrecking his appara¬ 
tus. Once my anastigmat lens, pointed nearly straight down. 
