[Cob] dove cote

[benjinsl]

Or, speaking of eating mosquitoes, a cob bat
house...http://www.batcon.org/bhra/bhcriter.html
They'd probably like a stuccoed cob for grip too.
-snip-
A cob/pottery wall or structure might also be good for purple martins - they
are great at eating mosquitos.
-snip-
Ben