For the past four or five years I have had some success with a reticulation  
system for providing year round water for the birds and other thirsty  
critters.
It comprises a 20 inch diameter plant saucer, (kind of rubbery plastic), a  
5-6 gallon old vacuum canister, a fish tank pump, a bucket heater and about 6  
feet of one quarter inch plastic tubing.  
The bird bath sits on top of an old pine stump about two feet above the  
reservoir.
Drill the "in" and "out" holes for the plastic tubing near the top of the  
rim.
During the winter some insulation may be wrapped around the canister.
To prevent blockage on the "out" there is a 3 inch diameter cylinder of  
screening standing vertically and topped off.
The set up has worked throughout the winters provided the water supply is  
maintained.  I keep the cannister covered.
 
Cheers,
Roy Pilcher
Proctor, Vermont

Speaking the same  language.



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