I just made a scope scan of the tern colony on Levitz's rooftop in Elmwood, which is just off the cloverleaf intersection of Clearview x Earhardt. I viewed it from a nearby building.
Today there were 18 sitting adult Least Terns, plus a pair tending two small downy young, and another downy young by itself. So, evidence for 20 pairs. There are probably more than that nesting at the site, since usually some nests will be unattended during a given scan.