She called it a pervert and it surrendered in shame.
Fern was doing an ecchi scene, and caught the Stille peeping.
The slap mark was on the other side of the Stille's face.
If only there was an expert we could consult for stratagems to catch quick birds...
Nothing special - Fern just told it to stay Stille
Didn't she just pick it up cause she's super sneaky mana wise?
It's never shown or stated in the source, but that is the most logical answer. She was good at hiding her mana even before being trained by Frieren for most of her life up to this point.
I thought Frieren was still better at suppressing her mana.
Although, Frieren did state in an earlier episode that Fern was faster at getting off spells, which would definitely be an advantage here.
I think the running theme has been that fern has built in stealth hax, since frieren struggled to find her before she could even suppress mana and the demon Lord couldn't detect her even using a flying spell right outside the window he was next to.
Also in the episode it looked like she was walking back to the two others as they were waiting expectantly and then she asks what now.
If the birds use mana as a threat reading above all else she could probably just walk over to it and pick it up.
They kidnapped Sein and transformed him into one.
The Stille bird is Ehren, the cage is an allegory to freedom. Ehren is a slave to freedom.
Peak analysis
Group members and known spells:
Fern - Ordinary offensive/zoltraak and defensive magic
Ubel - Chick with killer eyes, tears up bodies, shoots needles, posing on rocks, teasing bandits, killing bandits?
Glasses/Land/Ranto (I had to look up his name) - Looking cool in a tree, ???
I was wondering that too! I really want to know
You know that optical illusion with a bird on one side of a card and a cage on the other side?
That's how. /s
