The jacanas are a group of tropical waders in the family Jacanidae. They are found in the tropical regions around the world. They are noted for their elongated toes and toenails that allow them to spread out their weight while foraging on floating or semi-emergent aquatic vegetation. Scientific name: Jacanidae Mass: Northern jacana: 87 – 150 g Encyclopedia of Life Length: Northern jacana: 24 cm Encyclopedia of Life Rank: Family Higher classification: Ciconiiformes