The male Indigo Bunting rivals the Bluebird for blueness. Their blue startles the observer when they get a good look at one perched in the sun. In contrast, their bill appears whitish. The female builds the nest, usually within a yard of the ground. The male watches over her, probably to make sure no other male sneaks in to spread his genes. She will have one to three broods. They eat seeds, insects, tree buds, and berries. Their varied diet probably accounts for their large numbers.
The Indigo Bunting is a long-distance nighttime migrant, spending winters in the Caribbean, southern Mexico, and Central and northern South America. Using Indigo Buntings, scientists cracked one of the mysteries of bird migration. In one of the most famous bird migration studies, ornithologist Stephen Emlen published a study in 1967 of how Indigo Buntings learn to navigate at night by using stars.
Which brings me to my fruitless search (and I knew it would be fruitless) for a blue rose at Adkins. (Note: The blue pigment is rare in nature and does not exist in flowers. The search for the mythical blue rose has a long history, and modern science has been trying to produce one, with no success, for decades). There are no blue roses, just as there are no blue birds. Every time I called a bird blue was a lie.
This is the best explanation that I could find: "Unlike many other bird colors, blue is not a pigment but a color produced by the structure of the feathers. Tiny air pockets and melanin pigment crystals in each feather scatter blue light and absorb the other wavelengths. The even finer structure of the feather gathers the bouncing blue wavelengths together and directs them outward." Got that?? Read here for a more detailed explanation. The beautiful blue of Indigo Buntings, Bluebirds, Blue Grosbeaks, etc. that dazzles the eye of the beholder is trickery, trickery, trickery. If you grind up the blue feathers, the result is brown. For me, the bigger question is why nature goes to such great lengths to create a "blue" color.
Please contact me at [email protected] with any questions.
Jeobirdy Answer: This is the name of the Adkins course for kids (ages 8 and up) that will discuss the raptors in our area, what they eat, how they raise their young, and how they capture their prey. It will be taught on Saturdays, August 20 and 27, 10 a.m.–noon.
Jeobirdy Question: What is Rapturous Raptors? Register here.
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