Green Sandpiper

Islesteps high water flood pond. Water level up again with recent rains. Stopped by this am & found def 1 adult & I'm sure 2 young birds. Now I'm thinking this may corroborate my 8x30's sighting of a few weeks ago. But maybe not given passage of time & dispersal of young birds. The 2 young birds stick together mostly. However, given the males are left to raise the young, however improbable, the question is have they bred locally to Islesteps?? PJ