Hammelbills were crimson-feathered Deepwoods scavenger birds that lived in the Midwood Marshes and the sumpwood stands. They also ventured into the settlement of the Midwood Decks in search of scraps to eat. Hammelbills were large and ungainly, with long, spindly legs and bald, crested heads. Sumpwood trees were protected from rootweevils by hammelbills, for hammelbills fed on the rootweevils. They also ate dead bodies. During The Immortals, Nate Quarter and Eudoxia Prade saw a small group of hammelbills eat the body of a woodtroll free timbersmith who had been shot by a flat-head goblin pro-Hiver, and afterwards they developed a dislike of hammelbills because it reminded them of the unpleasant incident.