The enzymes that act inside the small intestine are amylase, protease, and lipase. Amylase acts on starch and breaks it down into small carbohydrate molecules. Protease acts on proteins and breaks them down into amino acids. Lipase breaks down dietary fats into smaller molecules called fatty acids and glycerol.
Sandhill Cranes mate for life, choosing their partners based on dancing displays. Displaying birds stretch their wings, pump their heads, bow, and leap into the air. Although each female usually lays two eggs, only one nestling typically survives to fledge.
Regional Differences. Sandhill Cranes are similar in plumage across their range, but they vary in size. âLesserâ Sandhill Cranes breed in the Arctic and are the smallest; the largest form (âGreaterâ Sandhill Crane) breeds in the northern U.S. The nonmigratory âFloridaâ Sandhill Crane and a form that breeds in central Canada are intermediate in size. Species in This Family Cranes (Order: Gruiformes, Family: Gruidae)