Dear Tom:

I have also found some live land snails on the roof which could have
hitch-hiked on birds as adults or as eggs: the European invader
Bradybaena similaris; the southern hemisphear invader Subulina octona; and
the native Polygyra cereolus. The arboreal Drymaeus multilineatus had
obviously dropped from overhanging trees onto the roof during one of my
visits to Dade County. I have also found many freshwater gastropods and
bivalves which were clearly dined upon by birds. Stranger still, I have
found Perna mussel and Quahog shells on the roof which were pilferred from
restaurant dumpsters by seagulls and crows. Perna is invading us by sea and
air!

Yours, Andrew

----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------