Saw a report of a Solitary SP from Ty Allen on his e-bird report from Sunday 7/15/2018. Went and checked it out this afternoon, Monday 7/16 since only a few minutes from my house. Indeed, only shorebird on drying up pond. Feeding, active and quite vocal. Present at 4:10 PM when I departed. Photos.
Source: SanDiegoRegionBirding Latest Reports