372 MEMOIRS OF THE NUTTALL ORNITHOLOGICAL CLUB. 



River and Pout Pond, a total area of probably not less than thirty or forty acres. 

 Throughout most of this tract they now literally swarm from early in May to 

 nearly the close of summer. By following the railroad embankments one may 

 easily penetrate dry-shod to the very heart of the colony and watch the gro- 

 tesque motions of the birds or listen to their odd, guttural songs ; but the 

 observer who would look for their curious globular nests should go prepared 

 for wading through water a foot or more in depth and perhaps, also, for falling 

 into some treacherous hole or ditch concealed beneath the luxuriant vegetation. 

 Most of the birds depart for the south before the middle of September, but a 

 few linger still later into the autumn; within the past decade, one or two have 

 repeatedly passed the entire winter in the immediate neighborhood of Pout 

 Pond, sheltering themselves from the cold beneath canopies of flags bent down 

 by the weight of accumulated masses of snow. 



Besides the localities just mentioned there are, I believe, but two others 

 in the Cambridge Region where the Long-billed Marsh Wren has been found 

 in summer, vis. : the Charles River Marshes, where, in some tall reeds border- 

 ing a tidal creek near the Cambridge Cemetery, Mr. Charles R. Lamb saw a 

 single bird and its nearly completed nest on July 14, 1883 ; and the meadows 

 bordering Beaver Brook just below the Waverley Oaks, where Mr. Richard S. 

 Eustis heard several males singing on June 9, 1900. 



234. Certhia familiaris americana (Bonap.). 

 Brown Creeper. Tree Creeper. Creeper. 



Transient visitor in spring and autumn and regularly resident through the winter. More 

 or less common at all three seasons, but most so in autumn. One instance of occurrence in 

 midsummer. 



SEASONAL OCCURRENCE. 



September 12, 1891, one seen, Cambridge Region, W. Faxon. 



September 25 — May i. (Summer.) 

 May 8, 1893, one seen, Cambridge Region, W. Faxon. 



July 17, 1878, one seen, Cambridge, C. F. Batchelder. 



A few Brown Creepers sometimes appear in the Cambridge Region as early 

 as the middle of September, but the bulk of the flight from the north does not 

 arrive until nearly a month later. When the autumn leaves are falling freely 



