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File:Bronze-winged jacana (Metopidius indicus) immature composite.jpg

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English: Bronze-winged jacana (Metopidius indicus) immature, Chambal River, Uttar Pradesh, India. A composite of 8 images shot over 30 seconds in a sequence showing the bird deal with a grasshopper. Many bird species, particularly those in captivity and those eating human food, dunk food in water, often to soften it. Adult birds have also been observed dunking insects in water to moisten them when feeding their young. One possible explanation for this particular behaviour (which may be new to science) is that the immature bird is mimicing its parent's behaviour, although jacanas are precocial. Another possible explanation comes from the knowledge that this bird lives on the banks of the Chambal River and has to feed on land at this time of year. Jacanas usually feed in standing water and move around on lily pads (hence the nickname of Jesus birds as they appear to walk on water) catching insects which are much more likely to be wet. The bird is unlikley to be trying to drown the grasshopper. It doesn't hold it under water. The grasshopper is still alive as it has moved between images 5 and 6. I have also uploaded eight Individual images (3184 x 3184 pixels) onto Commons.
Français : Jacana à ailes de bronze (Metopidius indicus) immature, photographié près de la rivière Chambal, dans l'Uttar Pradesh (Inde) Cet assemblage de 8 images (faites en 30 secondes) montrent l'oiseau face à une sauterelle.
Certaines espèces d'oiseaux (dont nés en captivité et ceux qui mangent de la nourriture humaine) trempent la nourriture dans l'eau (pour l'adoucir ?). Des oiseaux adultes ont aussi été observés trempant des insectes dans l'eau pour les humidifier avant de nourrir leurs petits avec. Une explication de ce comportement particulier (peut être nouvelle pour la science) est que l'oiseau immature imite le comportement de ses parents, bien que les jacanas soient précoces. Autre explication possible : cet oiseau vit sur les rives de la rivière Chambal et doit à cette période de l'année se nourrir sur terre alors que les Jacanas se nourrissent généralement dans d'eau stagnante et se déplacent sur des nénuphars (d'où le surnom d'oiseaux de Jésus qui semblent marcher sur l'eau) attrapant des insectes qui sont beaucoup plus susceptibles d'être mouillés. Il est peu probable qu l'oiseau cherche à noyer la sauterelle, car il ne la maintient pas sous l'eau ; elle est d'ailleurs toujours vivante car elle s'est déplacée entre les images 5 et 6. Les huit images individuelles (3184 x 3184 pixels) ont été téléversées sur Commons.
Date
Source Own work, from Sharp Photography, sharpphotography.co.uk
Author
creator QS:P170,Q54800218
Camera location26° 46′ 26.34″ N, 78° 40′ 18.93″ E Kartographer map based on OpenStreetMap.View all coordinates using: OpenStreetMap - Google Earthinfo
Wiki Science Competition 2017
This image was uploaded as part of Wiki Science Competition 2017.

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Wiki Science Competition 2017
This image was uploaded as part of Wiki Science Competition 2017.

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current23:04, 12 December 2017Thumbnail for version as of 23:04, 12 December 20176,000 × 3,000 (14.21 MB)Charlesjsharp (talk | contribs)error on line
22:01, 11 December 2017Thumbnail for version as of 22:01, 11 December 20176,000 × 3,000 (14.23 MB)Charlesjsharp (talk | contribs)User created page with UploadWizard
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