Question, what is the current situation of that organisation?
This organisation was pretty big, according to the lore. They were guarding borders of the Ashenvale forest until the first invasion of the Horde, when Garrosh started the war.
Wolfheart was describing that invasion. In that book Silverwing Sentinels gave a fight to the Horde, but were defeated. Almost all members of the Silverwing Sentinels were killed, and it was clear that this organisation does not exist anymore.
But later, Blizzard have updated the Warsong Gulch. It was also mentioned, that Horde have left Ashenvale forest, and Night Elves again guard borders. In other words it seams that this organization was recreated?
When the Horde made a second invasion, started by Sylvanas, they were mentioned only in one line of text, in Elegy book.
When druid was flying over “Silverwing Grove”, the main base of the Silverwing Sentinels, there was a smell of the fresh blood, but there was no bodies, and nobody alive also. Everyone were missing.
On Wowpedia, the state of that organisation is Active. So question - is there any clues, maybe some profession or a class quests, or table missions, anything and anywhere where Silverwing Sentinels are mentioned after the War of the Thorns?
I remember Myara Nightsong was one of the leaders of the Silverwing Sentinels, wearing their tabard. But now she is a member of the Army of the Black Moon, wearing Darnassus tabard. Perhaps all those sentinels are now members of the army of the Black Moon?