can you send pictures to the close vets around your town/city and shelters/or anywhere where they may have been dropped off by someone who (thought)they were strays...i know it sounds impossible but believe me...it isn't.
i would send pictures out as quick as possible to every shelter and vet in the cities and towns near or around you.

lets just hope they return on their own...i'm so sorry and sending out some prayers for their safe return.

Are they fixed?