OF ARTS AND SCIENCES 93 



and even to the end of x\ugust. Several times a flight song has 

 been once given in the early morning of a mid- August day. 

 Four or five pairs are sometimes located in the valley at the foot 

 of Bo}^ Mountain, as many more along the South Branch which 

 the Jefferson Notch road follows, and as man}' more along the 

 turnpike out through the valley to Riverton. The song is 

 regularly heard also from several birds near the summit of the 

 Mt. Madison road to the Glen, where the forest has been cut 

 and later a fire ran, making it a comparatively open woodland 

 with young growth. 



The song is rich and full, as warbler songs go,- and gives 

 pleasure by its cheeriness. The songster usually occupies a 

 somewhat high perch, when he gives himself over to song, often 

 a dead tree or dead branch, where his form can be well seen and 

 his combination of bright and sombre coloring can be well dis- 

 cerned. So situated, he will continue his song many minutes 

 before dropping into the bushes beneath. The species disap- 

 pears early, frequentl}' no birds being noted after late August. 

 The latest record of a bird is September 13, 1903, when in the 

 valle}^ one sang once the full song. The song has also been 

 heard on September i and 2, in 1907 and 1906 respectivel}^ 

 given by the last bird recorded for the season. 



162. Geothlypis trichas trichas. Maryland Yellow- 

 throat. 



A common summer resident in the valle3's and along the 

 streams on the mountain sides up their courses for a few hundred 

 feet elevation. The species is very numerous along the turnpike 

 through the valley to Riverton, the forest on either side of which 

 has been burned. On July 2, 1906, and Juh' i, 1908, thirt}^- 

 seven singing males were recorded there, the talh' on both occa- 

 sions being the same. The song period extends into early 

 August with little interruption, and the song is regularlj^ heard 

 at times throughout the month and into the middle of Septem- 

 ber, also sometimes upon a late September day. The flight song 



