Most of the Swallows frequenting the marshes just 
now are Barn Swallows. On the night of the 17tn, when it 
was nearly dark, a swarm of them were dashing to and fro 
about the bend just below Ball's Hill where I saw them go 
to roost in 1836 or 1887, Ho doubt they are still roosting 
there in the same cluster of black willows for I saw several 
of them attempt to alight in these trees on this last 
occasion (July 17, 1909) although they did not actually 
settle down on their perches but kept on after fluttering 
for a moment among the leaves. They fly about, now high 
now low and very rapidly, in a compact flock, making a loud 
and excited twittering, for some time, passing back and 
forth near Ball's Hill, This I note every evening and 
have done so before for years past but never since 1886 or 
1887 have I actually seen them go to roost. 
