Without a steady supply of new players trying to 1v1 them, Toxic Spider Queens of Kessex are known to experience bouts of great depression, going as far as attempting to drown themselves. :
Sweltering Canyons - Guild Wars 2 Wiki (GW2W)
Heart of Thorns tricks & miscellanea: Famm's list of questionably useful things to know about PvE in Heart of Thorns : r/Guildwars2
Group Event] Help Gunnkell hunt down the champion canyon spider queen - Guild Wars 2 Life