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Right Humerus (Right Upper Arm Bone) of the Black Skimmer Rynchops niger (MCZ 345002)


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Phylogenic Position
Aves - Neognathae - Charadriiformes - Rynchopidae - Rynchops - Rynchops niger
Species Description
Rynchops niger, also known as the Black Skimmer, is one of three species in the skimmer family, which get their name from their unique feeding behavior. The lower mandible is elongated compared to the upper portion allowing them to skim the water’s surface in hopes of catching insects, mollusks, crustaceans, and small fish. At hatching the mandibles are of equal length, but throughout fledging, the upper and lower parts quickly become unequal in length. They breed on the sandy shores of North and South America, the male and female Black Skimmer incubate about 4 or 5 bluish or darkened buffed eggs. The chicks leave the nest right after hatching and rest in the area of the nest where they are protected from the severe temperatures. The young skimmers are fed only during the day, because the parents depart the colony to hunt in the evening. The body of this seabird is 40-50 cm, oddly proportioned with long narrow wings, short red legs, and a knife-like bill. Another unique feature of the Black Skimmer is its vertical pupil surrounded by a dark brown iris. If you see a bird with a graceful flight, skimming the surface of the waters, loafing on sandbars or coasts, or if you hear a call sounding like a barking “kak-kak-kak,” then the Black Skimmer is near.
Specimen Information
Species Rynchops niger (Black Skimmer)
Element Right Humerus (Right Upper Arm Bone)
Specimen Number MCZ 345002
Sex Male
Location Brazil, Goias, Macuaba, Ilha do Bananal
Geological Age Recent
 
Technical Information
Scanner Konica Minolta Range7
Resolution 40 µm
Number of Data Points 170574
Number of Data Polygons 85288
Date Scanned February 01, 2011
Scan Technician Jennifer Leavitt
Edited By Ariana Masi
 
Photographs


View All 5 Images

Download Digital Model Size
STL File Not Publicly Available 8.5 MB
Other Rynchops niger (Black Skimmer) Elements
Specimen Element
CU 42850 Mandible (Jawbone )
CU 42851 Mandible (Jawbone )
CU 42855 Mandible (Jawbone )
CU 42856 Mandible (Jawbone )
CU 42862 Mandible (Jawbone )
CU 42863 Mandible (Jawbone )
MCZ 341426 Left Humerus (Left Upper Arm Bone)
MCZ 341426 Right Humerus (Right Upper Arm Bone)
MCZ 341426 Mandible (Jawbone )
MCZ 341426 Right Tibiotarsus and Fibula (Right Middle Leg Bones)
MCZ 341426 Left Tibiotarsus and Fibula (Left Middle Leg Bones)
MCZ 345002 Cranium (Skull)
MCZ 345002 Mandible (Jawbone )
MCZ 345002 Articulated Cranium and Mandible (Attached Skull and Jaw)
MCZ 345002 Left Humerus (Left Upper Arm Bone)
MCZ 345002 Left Femur (Left Upper Leg Bone)
MCZ 345002 Right Femur (Right Femur)
MCZ 345002 Left Tibiotarsus and Fibula (Left Middle Leg Bones)
MCZ 345002 Right Tibiotarsus and Fibula (Right Middle Leg Bones)
MCZ 345002 Left Tarsometatarsus (Left Fused Element Consisting of Ankle and Middle Foot Bones)
YPM 107666 Left Humerus (Left Upper Arm Bone)
YPM 107666 Mandible (Jawbone )
YPM 107666 Furcula (Wishbone)
YPM 107666 Right Humerus (Right Upper Arm Bone)
YPM 107666 Left Tarsometatarsus (Left Fused Element Consisting of Ankle and Middle Foot Bones)
YPM 107666 Right Tarsometatarsus (Right Fused Element Consisting of Ankle and Middle Foot Bones)
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