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They are similar to these but I believe the ones in your pic are bigger. http://www.petsmart.com/product/index.jsp?productId=11147486
I use these for my buttons, they work pretty well. But the coturnix are water hogs. You can use rabbit water bottles for quail (the ones with the spout) if you can't find the ones you are looking for.
You'd be better off asking the person who posted that pic where they got their waterers