Doomed hunt

The moon is shining down onto the calm waters of the peaceful river. The air is quite humid, and the majority of buzzing insects are gone.
The calm is broken by movement in the forest. Suddenly, a rabbit-sized bandicoot jumps from the shore. It is panicking in the air and dripping silvery droplets into the water. Mid-jump, an owl breaks through the canopy and snatches the bandicoot. An ear-piercing shriek; ripples course through the water. The bandicoot is large and its squirming is not making it easy for the owl to gain height.
It isn't given time. A razor angler jumps from the water and snatches both bandicoot and owl. It thumps back into the water, the canoe swinging widely from the waves the fish caused with its landing.
Little by little, the waters return to normal. Until gurgling noises and ripples disturb the river. The noises and disturbances stop when a razor angler's belly and its lure float into the surface, lifeless.
The river and the mangrove forest have suddenly gone still and quiet, intimidated by the events. No insects, no fishes popping out of the water, an uneasy feeling of a bad omen fills the area. The entire night, paralyzed.

The event occurs at night. If they want to track it then, the Survival DC is 15.
If they follow the bandicoot tracks, they will reach a patch of bandicoot silver and destroyed silver death (unharvesteable). The bandicoot silver patch is sizeable, and one of the tubers has some teeth marks on it, but it doesn't look like any flesh was actually eaten from it. They can harvest 1d4 + 1d6 lb of bandicoot silver.
If Mogo consults or thinks about what this may mean, he gathers that the unsuccessful hunt spells death or doom.