feen. 
son THE NATURAL HISTORY — 

_ Swallows and Martins colle&ing ona walnut-tree; : 
the next morning, which was foggy, at the dawn 
of day, they all arofe together; the ruthing noife 
of the wings, of fuch a {warm of birds, againtt 
‘the hazy air, was heard to a confiderable dif 
tance ; after that day, only a few ftragglers were 
He has remarked in on late {prings, that. 
| though they made their appearance about the mide 
dlé of April, yet meeting with cold, bluftering, 
north-eaft winds, they immediately withdrew, ab-_ 
{conding for feveral days, until warmer weather 
allured them out ; hence, he nie | that they do 
not migrate, — 
‘When a boy, he erent to ane ta a 
ftrageler on Shrove Tuefday, which muft have 
been not later than the middle of March, and often 
_ happens early in February. He has known a 
— Chimney Swallow build in the fhaft of a well; but 
he adds, that they generally with us build in 
chimnies, preferring a funnel contiguous to thofe 
_ where there are conftant fires, and difregarding 
{moke. | 
He remarks, that the S wal ow difcovers. won 
derful addrefs in afcending ind defcending g through 
_ fo narrow a pafiage. When hovering over the top 
of the funnel, the vibrations of her_wings in the | 
-eonfined air, make a rumbling noife like thunder 
The 


