Springen naar inhoud

Eenden


  • Log in om te kunnen reageren

#1

Xochimilco

    Xochimilco


  • >25 berichten
  • 27 berichten
  • Gebruiker

Geplaatst op 31 maart 2014 - 11:14

Kon het antwoord helaas niet op internet vinden en vroeg mij af of iemand hier het misschien wist.

Kunnen eenden kleuren zien?

Alvast bedankt!

Dit forum kan gratis blijven vanwege banners als deze. Door te registeren zal de onderstaande banner overigens verdwijnen.

#2

Kravitz

    Kravitz


  • >1k berichten
  • 4042 berichten
  • Moderator

Geplaatst op 31 maart 2014 - 20:41

Onderstaand stukje tekst handelt over het zicht van watervogels. Samengevat hebben watervogels meer kegeltjes dan ons waardoor dat de kleuren meer levendig overkomen. Verder zijn ze ook in staat om UV-licht te zien, iets wat mensen niet kunnen.

Answer: Well, this actually is a fairly entertaining question since waterfowl are much different than many other animals — especially us!

According to Department of Fish and Game (DFG) waterfowl biologist Shaun Oldenburger, waterfowl can control the curvature of both the lens and cornea (mammals, including humans, only control the lens). This is basically how birds can see extremely well while flying and while in the act of diving/feeding. In addition, their eyes act independently and they use one at a time to allow for depth-perception since nearly all waterfowl have monocular, not binocular, vision (they can’t stare forward at objects).

Another unique thing about waterfowl is they can see in almost all directions. A few ducks are the exception to the rule, but usually the eye placement allows them to view in many different directions at the same time. Secondly, waterfowl have a very high number of cones (which dictates color vision in humans) which allows them to see sharp images and have color vision where colors are more vivid than humans’ ability. The breadth of color vision is much wider than our own since UV light can be observed by waterfowl (UV light is absorbed by lenses in humans). This allows waterfowl to fly at night or feed in the dark or at low light conditions.

Bron: California Department of Fish and Wildlife Q&A
http://californiaout...ucks-see-color/
"Success is the ability to go from one failure to another with no loss of enthusiasm" - Winston Churchill

#3

Xochimilco

    Xochimilco


  • >25 berichten
  • 27 berichten
  • Gebruiker

Geplaatst op 01 april 2014 - 10:18

Super! Dank je!





0 gebruiker(s) lezen dit onderwerp

0 leden, 0 bezoekers, 0 anonieme gebruikers

Ook adverteren op onze website? Lees hier meer!

Gesponsorde vacatures

Vacatures