Unknown
Thursday, April 7, 2011
Some hummingbirds are attracted to red feeders as much as some humans are attracted to the “Golden Arches”. But just as we realize McDonald’s isn’t the only restaurant in town, hummingbirds can find nectar feeders of various colors too.Scientists have confirmed that most birds see colors. Humans’ eyes have three types of color-sensitive cones that allow us to see three primary colors in terms of light which are red, green and blue. Birds' eyes have four types of color-sensitive cones which allow many birds to also perceive ultraviolet (UV) light.
.
Being able to see a broader spectrum of light can make as big a difference as watching black and white verses color television. .
Although unsure how birds benefit from their enhanced visual perception, you can assume from the way UV light reflects from their feathers that it might play a part in mate selection. And for nectar eating birds like the hummingbirds, a flower’s secret pattern on the petals act as arrows, to guide the pollinating birds and insects to the right spot.
So there is no need to worry if you want to put out a blue hummingbird feeder and there is no need to color your nectar (sugar water) with red food coloring. Birds are very clever at foraging for food.
Watch the video at: http://youtu.be/XoZRDa7Ag2E
Click HERE for a more detailed sugar recipe.
.
Source: Bird Vision- http://en.wikipedia.org/wiki/Bird_vision
Video from Richard Hammond's Invisible Worlds - Out of Sight
Video from Richard Hammond's Invisible Worlds - Out of Sight
Category ›
Question of the week
No comments:
Post a Comment