<< Previous Next >>

Anas sibilatrix & Oxyura vittata


Anas sibilatrix & Oxyura vittata
Photo Information
Copyright: Ferran J Lloret (ferranjlloret) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 794 W: 57 N: 2111] (10298)
Genre: Animals
Medium: Color
Date Taken: 2007-12
Categories: Birds
Camera: Canon EOS 40 D, Canon EF 100-400 mm F4.5-5.6L IS USM
Exposure: f/8, 1/500 seconds
Photo Version: Original Version
Theme(s): Birds of South America [view contributor(s)]
Date Submitted: 2008-02-20 11:44
Viewed: 3874
Points: 2
[Note Guidelines] Photographer's Note
The Chilöe Wigeon, pato zambullidor chico o pato real, is one of three species of wigeon in the dabbling duck genus Anas. Unlike other wigeons, the sexes are similar (thought the male is often slightly brighter) and pairs are monogamous.
This duck is found in South America, on freshwater lakes, marshes, lagoons and slow flowing rivers.

The Argentine Blue-bill or Argentine Lake Duck, pato overo o pato rana de pico delgado, is a small South American stiff-tailed duck.
It is notable for possessing, in relation to body length, the longest penis of all vertebrates; the penis, which is coiled up in flaccid state, can reach about the same length as the animal itself when fully erect, but more commonly is about half the bird's length.[2][3] It is theorized that the remarkable size of the spiny penis with its bristled tip may have evolved in response to competitive pressure in these highly promiscuous birds, removing sperm from previous matings in the manner of a bottle brush.
Information source Oxyura
Information source Anas
IUCN Anas
IUCN Oxyura
Personal Wew

This photo is taken near Trelew, Chubut, Argentina.

JoseMiguel has marked this note useful
Only registered TrekNature members may rate photo notes.
Add Critique [Critiquing Guidelines] 
Only registered TrekNature members may write critiques.
Discussions
None
You must be logged in to start a discussion.

Critiques [Translate]

Hola Ferran,
Imagino estabas a gran distancia de los patos.
Aun así pueden apreciarse los poco comunes picos azules, así como el interesante patrón de formas y colores en su plumaje.
Me gusta la composición tringulada de la imagen.
Buen trabajao y gracias por mostrarlo.
Un gran saludo,
JM

Calibration Check
















0123456789ABCDEF