Jake didn't have time to waste, so he only rested until midnight before he headed toward the enemy's territory. He was quite certain that they would be weaker at night with all that cold, so Jake had to use that chance to decrease their numbers.
After his approach, Jake noticed that some of the crows were resting at the top of some boulders. Flying all day and emitting that much energy was only possible due to the sunlight. At night, they had to conserve their energy. Despite that, they weren't sleepy, so approaching them and hoping for an ambush was unlikely to succeed.
"I guess I will throw my swords at them again," Jake thought.