EQUIP an owl drone. FIRE to deploy and take control of movement of the drone. While in control of the drone, FIRE to shoot a marking dart. This dart will reveal the location of any player struck by the dart.
Just because [E] Recon Bolt didn't spot a target doesn't mean they're not there. The bolt has a slight delay, can be destoyed, and requires line-of-sight to enemies.
If you don't know where the enemy team is, before you peek a dangerous sight line, scout it with a bounced [E] Recon Bolt first.
Sova excels at information gathering for his team with skills like [C] Owl Drone, [E] Recon Bolt, and the on-hit effect from [X] Hunter's Fury.
Your teammates can see spotted enemies, but the timer is very brief so be sure to call it out.