Hummingbird Madrona Marsh almost Winter 064

"hummingbird bill tips: their function as tongue wringers
...By using microCT scanning and macro high-speed videography we scrutinized the morphology and function of hummingbird bill tips, looking for answers about the nectar offloading process. We found near the bill tip, in an area of strong lateral compression of internal mandibular width, that the tomia (cutting edges of the bill) are thinner, partially inrolled, and hold forward-directed serrations. Aligned with these structures, a prominent pronglike structure projects upward and forward from the internal mandibular keel. Distal to this mandibular prong, another smaller maxillary prong protrudes downwards from the keel of the palate. Four shallow basins occur at the base of the mandibular prong on the mandibular floor. Of these, two are small basins located proximally and at the sides of the mandibular prong. A third, slightly larger basin is positioned distally to the first two and directly under the maxillary prong. And the fourth basin, the largest, is found more proximally where the bill becomes thicker, as seen from the side. We documented that this group of structures is integrated into the area of the bill where tongue extrusion occurs, and we hypothesize that they function to enhance the nectar release at each lick. We suggest that this "wringer", operated by bill and tongue movements, helps to move nectar towards the throat."
www.ncbi.nlm.nih.gov

Taken in: United States / California / Torrance / West Torrance (show map)

Taken on: December 2, 2018

Tags:

pekabo90401

southern california birds

80D

canon 80 D

Canon

Camaraderie

Friendship

Fugl

Hummingbird

avem

anna's hummingbird

Bird watching

Bird watching Los Angeles

Lightroom

lind

tiny bird

Branch monkey

madrona Marsh

Marsh monkey

Calypte anna

Colibrí de Anna

Colibri d'Anna

torrance

oiseau

Oiseau minuscule

chim

Wesen

Vogel

almost Wintertime « less

Sets appears in: • Madrona Marsh • Hummingbirds more » • Bird watching « less

Camera: Canon EOS 80D, f/9.0, 1/1250 sec, 371mm, ISO 1000 (more info) (hide info)

Camera:	Canon EOS 80D
Lens:	EF100-400mm f/4.5-5.6L IS II USM
Aperture:	f/9.0
Exposure Time:	0.001 sec (1/1250)
Focal Length:	371mm
ISO:	1000
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Spot
White Balance:	Auto
Color Space:	sRGB
Software:	Adobe Photoshop Lightroom 5.7 (Windows)
Show full info

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