Dawnlark Plains peanut butter & jelly

it had been three? four days since he'd caught atreus' scent. longer? ancelin now slunk guiltily through the plains. he had been spending more time following augur, and less with — 
well, now he was here. ancelin hunted for the stale end of his brother's trail, getting more and more sick as he realized how far from the rise it led.
eventually he stopped with a whine. hadn't he said something about a river? 
maybe that's where atreus had gone.
but ancelin stood rooted. he had never traveled so far before.