Standing water in the garden
I have a birdbath that I keep filled for the many birds in my yard. I change the water frequently (4 or 5 times a week). But in light of the Zika virus I keep hearing that we should not have standing water. What is your expert opinion?
Mosquito larvae require several days spent in the water to mature into adults. The Asian Tiger mosquito, which is the one which MAY (not proven in the environment yet) transmit Zika, takes 5 to 10 days. There is no problem with you having a birdbath.
Here is more info on the Asian Tiger Mosquito: http://mda.maryland.gov/plants-pests/Pages/asian_tiger_mosquito_md.aspx