Proclaim
Someone climbs onto the roof from the ground when dawn comes to proclaim that a new day has begun! They proclaim this at the top of their lungs!
Picture a shadowy shape on top of the roof, proclaiming to the entire town that the new day is here! It's come! And it's also time to get up.
せん
のたま
None
The thing that climbs up on the roof to proclaim that the new day is here is a centaur (せん). Ohoho, did you think I was going to say it was a rooster? Wrong! Centaurs are taller than humans and roosters, so when they climb onto the roof with their horse legs they can see dawn starting before anyone else.
Picture that shadow on the roof, proclaiming it's a new day, but this time make sure you picture the outline of this centaur. He has a human top half and a horse bottom half. And he's yelling down at you, "HEY THE SUN IS UP IT'S DAWN GET OUT OF BED!"