File:PloverCrocodileSymbiosis.jpg

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Descrizione
English: A small bird such as a plover or sandpiper, representing the Trochilus described by Herodotus, eats leeches from the gaping open mouth of a Nile crocodile in an early example of Cleaning Symbiosis.
Data
Fonte http://www.50birds.com/gendalligators2.htm, image taken from Popular Natural History, 1909
Autore Henry Scherren
Licenza
(Riusare questo file)
PD-Old-100 and PD-1923; Scherren died in 1911 so copyright has expired.
Altre versioni

A 'Trochilus' bird, perhaps a Sandpiper or Plover, Spur-winged Plover eats leeches from from the teeth of a Nile Crocodile, in a classic supposed example of cleaning symbiosis.

Egyptian Plover (Pluvianus aegyptius). Africa's Spur-winged Plover Vanellus spinosus is a lapwing and has black head with bold white triangle opening towards neck. P. aegypticus is a courser with a black head with two thin white stripes as here. The behaviour is apparently real, but not well documented. Dysmorodrepanis 21:35, 4 April 2008 (UTC)
Whatever the portrayed bird is meant to be, it is neither a Spur-winged plover (for instance black belly) nor an Egyptian plover (for instance black hindneck). The African bird it most resembles is the White-crowned/headed plover/lapwing (Vanellus albiceps). I guess the illustrator/author was not too familiar with African birds.
I wonder. The behaviour has been recorded among Sandpipers in Egypt, and the bird drawn is not unlike the Common Sandpiper (Actitis hypoleucos) (which overwinters in Egypt), so perhaps the artist used that as the model. Chiswick Chap (talk) 11:01, 17 February 2012 (UTC)
A footnote: there is little evidence for cleaning symbiosis between any bird and the Nile Crocodile, but what there is suggests that Herodotus and Scherren most likely heard about sandpipers; and Scherren clearly picked a sandpiper as his model for this illustration. Chiswick Chap (talk) 09:28, 4 November 2012 (UTC)

Illustration from Popular Natural History by Henry Scherren, published 1909. Image found at [:http://www.50birds.com/gendalligators2.htm].

Licenza

Public domain

Quest'opera è nel pubblico dominio anche in tutti i Paesi e nelle aree in cui la durata del copyright è la vita dell'autore più 100 anni o meno.


Quest'opera è nel pubblico dominio negli Stati Uniti in quanto pubblicata (o registrata all'U.S. Copyright Office) prima del 1º gennaio 1929.

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Trochilus inglese

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Data/OraMiniaturaDimensioniUtenteCommento
attuale14:31, 16 gen 2013Miniatura della versione delle 14:31, 16 gen 20131 520 × 1 853 (1,66 MB)Chiswick ChapFresh scan from book at better resolution
20:27, 27 mar 2006Miniatura della versione delle 20:27, 27 mar 2006360 × 394 (49 KB)Renamed user 82lfy1a93y96wr3pA Spur-winged Plover eats leeches from from the teeth of a Nile Crocodile, in a classic example of Symbiosis. Illustration from Popular Natural History by Henry Scherren, published 1909. Image found at [:http://www.50birds.com/gendalligators

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