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Aves - Neognathae - Opisthocomiformes - Opisthocomidae - Opisthocomus - Opisthocomus hoazin

Sternum (Breast Bone) of a Opisthocomus hoazin (Hoatzin)

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Species Description
The hoatzin is an enigmatic, primarily arboreal bird found in the swamps, mangroves and riverine forests along the Amazon and Orinoco Rivers in South America. First described by Spanish explorers in the 17th century, the hoatzin averages 25 inches long and weighs around two pounds. The hoatzin is the only member of its family and genus, and its taxonomic relationships are still unresolved. Based on the morphology, the hoatzin was originally considered a galliform; more recent molecular studies have placed the hoatzin within various groups, including cuckoos, doves and turacos.
Skeletal Elements Available

Species Description

The hoatzin is an enigmatic, primarily arboreal bird found in the swamps, mangroves and riverine forests along the Amazon and Orinoco Rivers in South America. First described by Spanish explorers in the 17th century, the hoatzin averages 25 inches long and weighs around two pounds. The hoatzin is the only member of its family and genus, and its taxonomic relationships are still unresolved. Based on the morphology, the hoatzin was originally considered a galliform; more recent molecular studies have placed the hoatzin within various groups, including cuckoos, doves and turacos.

Skeletal Elements Available

Sternum (Breast Bone)	Left Humerus (Left Upper Arm Bone)	Right Humerus (Right Upper Arm Bone)
Left Femur (Left Upper Leg Bone)	Right Tibiotarsus (Middle Leg Bone, Right)	Left Tibiotarsus (Middle Leg Bone, Left)
Mandible (Jawbone )	Sternum (Breast Bone)	Left Humerus (Left Upper Arm Bone)
Right Humerus (Right Upper Arm Bone)	Left Tarsometatarsus (Left Fused Element Consisting of Ankle and Middle Foot Bones)	Right Tarsometatarsus (Right Fused Element Consisting of Ankle and Middle Foot Bones)
Left Radius (Lower Arm Bone)	Right Radius (Lower Arm Bone )	Left Femur (Left Upper Leg Bone)
Right Femur (Right Femur)	Right Humerus (Right Upper Arm Bone)	Left Humerus (Left Upper Arm Bone)
Sternum (Breast Bone)	Mandible (Jawbone )	Left Tarsometatarsus (Left Fused Element Consisting of Ankle and Middle Foot Bones)
Right Tarsometatarsus (Right Fused Element Consisting of Ankle and Middle Foot Bones)