Friends In Feathers

During the World Quest 'Claws for Concern' in Whorlwing Basin there are little moonkin hatchlings to rescue. There are 18 needed for this achievement and only 6 needed for the World Quest. Once you rescue 6 you're unable to rescue more until the next time the World Quest is up. However progress is account-wide so you can do it on 3 toons or you can just join a raid group so that you can rescue them without progressing the World Quest.

/way #2200 36.36 71.57 Squawkie
/way #2200 38.45 69.55 Feets
/way #2200 35.67 67.09 Giblet
/way #2200 39.10 66.00 Bumbletweet
/way #2200 38.02 69.01 Peanut
/way #2200 40.39 71.50 Snoozle
/way #2200 39.31 71.77 Fruffles
/way #2200 37.78 70.27 Wingnut
/way #2200 37.39 72.25 Owlington
/way #2200 35.54 69.75 Meep
/way #2200 37.76 73.30 Hops
/way #2200 36.89 65.87 Beaks
/way #2200 38.45 69.33 Squeaky
/way #2200 36.40 62.76 Eugene
/way #2200 36.11 69.68 Moonbeam
/way #2200 36.41 71.20 Chickie
/way #2200 38.68 63.56 Fuzz
/way #2200 38.73 70.48 Tickles

/way #2200 38.84 71.57 Fruffles+Snoozle Cave
/way #2200 36.17 70.95 Chickie+Squawkle Cave
/way #2200 36.14 67.16 Giblet Cave
/way #2200 36.07 69.49 Meep Cave
/way #2200 37.57 69.65 Tickles+Wingnut+Squeaky Cave
/way #2200 37.57 68.59 Peanut Cave
/way #2200 36.91 62.40 Eugene Cave

The cave for Tickles, Wingnut and Squeaky has multiple entrances. I included only one.

An updated version of YariniCeteri's post, this divides the waypoints by six (the amount doable per character) and includes the cave entrances with each.

/way #2200 38.45 69.55 Feets
/way #2200 36.14 67.16 Giblet Cave
/way #2200 35.67 67.09 Giblet
/way #2200 39.10 66.00 Bumbletweet
/way #2200 37.57 68.59 Peanut Cave
/way #2200 38.02 69.01 Peanut
/way #2200 36.91 62.40 Eugene Cave
/way #2200 36.40 62.76 Eugene
/way #2200 38.68 63.56 Fuzz

/way #2200 38.84 71.57 Fruffles & Snoozle Cave
/way #2200 40.39 71.50 Snoozle
/way #2200 39.31 71.77 Fruffles
/way #2200 37.39 72.25 Owlington
/way #2200 36.07 69.49 Meep Cave
/way #2200 35.54 69.75 Meep
/way #2200 37.76 73.30 Hops
/way #2200 36.11 69.68 Moonbeam

/way #2200 36.17 70.95 Chickie & Squawkie Cave
/way #2200 36.41 71.20 Chickie
/way #2200 36.36 71.57 Squawkie
/way #2200 36.89 65.87 Beaks
/way #2200 37.57 69.65 Tickles, Wingnut. & Squeaky Cave
/way #2200 37.78 70.27 Wingnut
/way #2200 38.73 70.48 Tickles
/way #2200 38.45 69.33 Squeaky

Another achievement tied to a world quest that rarely spawns...