NIGHTHAWK 75 



together on the Common in the vicinity of 

 the burying-ground on December 4 to 6. 

 I saw one on Monument Hill in the morn- 

 ing of December 30 of that year, and the 

 bird was seen by Mr. Caduc on January 

 4 and 5, 1909. 



22. NiGHTHAWK 



Chordeiles virginianus 



One or two Nighthawks are heard regu- 

 larly each season calling from the sky over 

 Beacon Hill or the Back Bay. The call has 

 sometimes been heard and the bird seen 

 overhead in the early morning, while at- 

 tention was being given to the songsters 

 within the Garden. The middle of May is 

 the usual time for the appearance of the 

 species. 



In 1908 a Nighthawk was heard over 

 Beacon Hill in the evening of May 24, and 

 the next morning between three and three 

 forty-five o'clock was constantly calling. 

 The following morning, May 26, one was 

 heard up to four-thirty o'clock, and in the 

 early afternoon of that day, two o'clock, 



