Your hawks perform the mission and it is successful!
Your hawks have recruited 0 new workers!
Population before casting the spell: 754,487Workers: -15,745
Hawks: +572
Runes: +8,012
Mice: 0
Squirrels: +4,196
Hares: 0
Otters: +932
Population after casting the spell: 764,597
All of the military units were added properly, so they aren't part of the bug.
The spell claims it added 0 workers. The turn results say that I lost 15,745 workers. In reality I gained 10,110 workers. I just tried spending 2 turns trading, and lost about 6k workers. It looks like (despite what the game says) the spell gained me the 15k workers that it says I lost in those 2 turns, but I lost 5k for lack of housing or whatever, so I wound up with an additional 10k.
