FYI - Fox Run is just south of the swim beach (when you enter the park and turn right, Fox Run is the first picnic area on the left side of the road. If you pass the horse stables, you went too far),
I, along with another birder stopped at Fox Run after admitting defeat at the Marina sand-spit. We both found a BLKI there and after a little while we left. I decided to head back to the marina to alert other birders if possible and found Burke heading out on the spit. We headed back over to Fox Run and immediate got on the BLKI. After a few minutes, Burke pointed out the 2nd bird! Lifer for both of us! Good eye Burke!