Hi Marshall, Send your  question here-:_HummingbirdHobnob  : Post Message_ 
(http://pets.groups.yahoo.com/group/HummingbirdHobnob/post)   This site is a 
wealth of hummingbird info. ,.  Lois

We put up a  humming bird feeder last week. Normally you have to change the 
>sugar  water in it every couple of days because it will ferment.  I 
figured  
>that if I used colloidal silver to make the sugar water, it should not  
>ferment.  I was surprised that shortly after making the nectar it  turned 
>somewhat dark, like there was aggregation of the silver.  However, even 
>after 5 days, it is still in suspension, so I am  somewhat confused.  Also 
>I am concerned that it might cause  problems for the humming bird, if it 
>kills the bacteria necessary for  digestion.  I think others have given CS 
>to their birds without  any problem, but since a hummingbird eats nectar 
>almost exclusively,  their digestion might be more like a honeybee than 
>most  birds.
>
>Any  comments?
>
>Marshall