cluckmeister wrote:Fatback, go to Google Earth and type in Quivira National Wildlife Refuge, enhance the size and look at all the white that is currently showing. The picture was taken during a dry year and the white is salt deposits, this year the whole area is flooded with the water very brackish, Currently there are around 98,000 ducks on the area. So with this in mind, I would say all puddlers and divers have a very good salt tolerance.
yes , I live on the Atlantic ocean brother, lots of ducks in the salt water....Question is, are they drinking the salt water ( or what can they tolerate), biologist claim that only Sea ducks ( Eiders, scoters, ole squaw) and possibly Black ducks can drink it as they have glands that process it. I'm just wondering at what salinity level do puddlers stop drinking and have to get fresh water...if any?