You can get additional information about the revisions for a given document by supplying the revs_info argument to the query:

GET http://couchdb:5984/recipes/FishStew?revs_info=true
Accept: application/json

This returns extended revision information, including the availability and status of each revision:

{
   "servings" : 4,
   "subtitle" : "Delicious with a green salad",
   "_id" : "FishStew",
   "_revs_info" : [
      {
         "status" : "available",
         "rev" : "3-a1a9b39ee3cc39181b796a69cb48521c"
      },
      {
         "status" : "available",
         "rev" : "2-7c4740b4dcf26683e941d6641c00c39d"
      },
      {
         "status" : "available",
         "rev" : "1-9c65296036141e575d32ba9c034dd3ee"
      }
   ],
   "title" : "Irish Fish Stew",
   "_rev" : "3-a1a9b39ee3cc39181b796a69cb48521c"
}