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Men’s Hair and the Male House Finch

Male House Finch, Courtesy US FWS, Gary Kramer, Photographer
Male House Finch
Courtesy US FWS, Gary Kramer, Photographer
This is Linda Kervin for Bridgerland Audubon Society.

A man’s vanity is nowhere more apparent than for the hair atop his head. As men age, their hair may whiten, thin or disappear. As a remedy, some men use dyes or hair growth potions.

But imagine this: What if the right food alone could restore the virile dark hair of youth?

There is a common songbird at your birdfeeder this winter that can do just this. It is the male house finch.

[House Finch Call – #3 Songbirds of the Southwest Canyon Country]

As with many songbirds, the female house finch is drab compared to the brightly colored male. He sports a showy brow and bib in colors that range from tomato red to orange to straw yellow. Like the tomato and carrot, these colors come from pigments called carotenoids. All birds with red feathers get these carotenoid pigments from their diet, ultimately from the plants that can produce them.

What does the red feather color mean for the house finch?

The ornathologist Geof Hill of Auburn University experimentally altered head feather colors of male house finches. To make red-headed males into carrot tops, Jeff used peroxide. Red hair die achieved the opposite transformation. He then let the guys compete for the attentions of females.

Jeff’s experiments demonstrated that plumage does make the male. The redder the male’s head, the higher his place in the pecking order. And the more females that he could attract. Conversely, redheads lost rank after bleaching. Among male house finches, blondes really don’t have more fun.

So now you can predict the likely winners and losers in the mating game from just a glance at the male house finches at your seed feeder. As is common in science, this discovery leads to new questions: What food makes the male’s head feathers red? Is it some red fruit or berry? Why do some males manage to get more carotenoid pigments than others? Do they instinctively know the right seed or fruit to eat? We humans must get our carotenoids from plant sources too, such as the carotine that we transform into Vitamin A for night vision. The produce aisle at the grocery store might be a much different place though if the right fruit or vegetable could transform our hair color too.

This is Linda Kervin for Bridgerland Audubon Society.

Credits:

Photo: Courtesy US FWS, Gary Kramer, Photographer
Bird Sounds: Courtesy and Copyright 2008 Dr. Kevin Colver, Songbirds of the Southwest Canyon Country https://wildstore.wildsanctuary.com/collections/special-collections
Text: Jim Cane and Linda Kervin, Bridgerland Audubon Society https://www.bridgerlandaudubon.org
Voice: Linda Kervin

Additional Reading:

House Finch, Carpodacus mexicanus, Utah Division of Wildlife Resources, Department of Natural Resources, State of Utah, https://fieldguide.wildlife.utah.gov/?species=haemorhous%20mexicanus

House Finch, Utah Bird Profile, UtahBirds.org, https://www.utahbirds.org/birdsofutah/ProfilesD-K/HouseFinch.htm

A Red Bird in a Brown Bag: The Function and Evolution of Colorful Plumage in the House Finch , Dr. Geoffrey, E. Hill, Oxford University Press, September 2002
ISBN-13: 9780195148480, https://www.amazon.com/Red-Bird-Brown-Bag-Ornithology/dp/0195148487

New Addition: How birds turn red, Phys.org, May 19, 2016, http://phys.org/news/2016-05-genes-enable-birds-red.html

Pharr, Lauren D., Seeing Red: What the Color of House Finches Can Tell Us, Cool Green Science, The Nature Conservancy, November 2, 2021, https://blog.nature.org/2021/11/02/seeing-red-what-the-color-of-house-finches-can-tell-us/

Lowe, Joe, Invasive Birds of the U.S.: Seven of the Most Common Species, Bird Calls Blog, American Bird Conservancy, February 24, 2020, https://abcbirds.org/blog20/invasive-birds/

Leffer, Lauren, 10 Fun Facts about the House Finch, News, National Audubon Society, December 21, 2021, https://www.audubon.org/news/10-fun-facts-about-house-finch

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Turkey Vultures

Swainsons Thrush
Turkey Vulture in flight
Cathartes aura
Courtesy Utah Division of Wildlife Resources
Scott Root, Photographer
Licensed under CCL

Turkey Vulture Kettle above LoganTurkey Vulture Kettle above Logan
Cathartes aura
Courtesy and Copyright
Andrea Liberatore, Photographer

Turkey Vulture Kettle above LoganTurkey Vulture Kettle above Logan
Cathartes aura
Courtesy and Copyright
Andrea Liberatore, Photographer

On certain days in the spring and fall, the sky above my neighborhood looks like a scene from Alfred Hitchcock’s ‘The Birds’. As many as 60 large black birds swarm the sky, circling above the rooftops. On the busiest of days, people will stop their cars in the middle of the road to gawk at the sight. Some give a visible shiver when told that the birds are turkey vultures. But we have nothing to fear from these birds – in fact they should be embraced for the absolutely vital role they play in our environment.

There are lots of myths surrounding vultures, which in turn creates a misunderstanding about them. So let’s set the record straight on a few things. Vultures circle for two main reasons, neither of which involves waiting for a sick or wounded animal to die. The first reason is to take advantage of rising columns of air, called thermals, which generally occur in the mornings as the sun warms the air closest to the earth. Vultures are soaring birds and flapping their 6-foot wingspans takes a lot of effort, so they rarely do it. In fact these birds can fly for hours without a single flap. Circling within a thermal helps them travel higher and farther on much less energy.
The second reason vultures circle is to hone in on a food source. Turkey vultures are one of the few birds that have a highly developed sense of smell. Working together with their excellent eyesight, the birds soar and circle to pin down the location of their next meal.

Continue reading “Turkey Vultures”

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Autumn Leaf Color Change

Click for a closer view of Fall color in Logan Canyon, Courtesy and Copyright Linda Kervin
Fall color in Logan Canyon
Courtesy & Copyright 2007 Linda Kervin

Click for a closer view of Fall color in Logan Canyon, Courtesy and Copyright Linda Kervin Fall color in Logan Canyon
Courtesy & Copyright 2007 Linda Kervin

In autumn, the days shorten noticeably and chilly dawns become the norm across most of Utah. Leafy plants now prepare for winter. Their summer of intense metabolic activities gradually give way to winter’s dormancy. Photosynthesis and respiration shut down as nutrients and sugars are withdrawn from leaves, to be shunted to the stem and roots for storage. But how do they anticipate the change in seasons so that they are ready for the rigors of winter?

Photosynthetic plants have a diverse array of pigments that they use to capture energy from most of the spectrum of visible sunlight. Chlorophyll is the most abundant, but its light gathering effectiveness is limited to a narrow band of the light spectrum. Plants employ many additional pigments to capture the energy available from other wavelengths of sunlight. These accessory pigments are brilliantly colored but masked by the sheer abundance of green chlorophyll.

One of these pigments, phytochrome, serves as a timekeeper for the plant. When phytochrome absorbs energy in the red band of sunlight, it helps to activate a number of developmental processes in the plant. As the nights lengthen in the fall, there are fewer hours of sunlight to activate the phytochrome and so it transforms to inhibit those same developmental processes.

One result is that chlorophyll is broken down and its components are moved to storage for use in the following spring. Essential nutrients, such as nitrogen and phosphorus, are likewise withdrawn from foliage for later use. With chlorophyll gone, the other colorful leaf pigments are revealed. Now maples, aspens, sumacs and more blaze for a few weeks of riotous glory.

This is Linda Kervin for Bridgerland Audubon Society.

Credits:

Photos: Courtesy & Copyright Linda Kervin
Theme: Courtesy & Copyright Don Anderson as performed by Leaping Lulu
Text: Linda Kervin and Jim Cane, Bridgerland Audubon Society
Voice: Linda Kervin

Additional Reading:

Linda Kervin’s pieces on Wild About Utah

Chemistry of Autumn Leaf Color, How Fall Colors Work, About.com: Chemistry, https://chemistry.about.com/library/weekly/aa082602a.htm

Why Do Leaves Change Color in the Fall?, Anne Marie Helmenstine, Ph.D., About.com: Chemistry, https://chemistry.about.com/od/howthingsworkfaqs/f/fallleafcolor.htm

“Autumn: a season of change” (2000) by Peter J. Marchand, https://www.amazon.com/Autumn-Season-Peter-J-Marchand/dp/0874518709

Where to see autumn leaves in Utah:

  • U.S. 89, Logan Canyon, Brigham City to Logan, Logan to Bear Lake
  • State Route 39, Monte Christo Summit, east of Huntsville
  • State Route 190, Big Cottonwood Canyon, east of Salt Lake City, including Guardsman Pass
  • State Route 210, Little Cottonwood Canyon, east of Salt Lake City
  • State Route 92, the Mount Timpanogos loop a.k.a. the Alpine loop, north, east of Provo
  • State Route 150, the Mirror Lake road, east of Kamas
  • U.S. 40, Daniels Summit, east of Heber City
  • Vernal, Red Cloud Loop (See Dinoland.com)
  • Flaming Gorge – Unitas, State Route 191 and State Route 44
  • State Route 132 Payson to Nephi, the Nebo Loop
  • State Route 31, the Wasatch Plateau, east of Fairview
  • State Route 12, over Boulder Mountain, between Torrey and Boulder (likely the most spectacular of all)
  • The La Sal Mountain loop, east of Moab
  • The Abajo Mountain loop, west of Monticello
  • The canyons of the Escalante River, Grand Staircase-Escalante National Monument, southeast of Escalante

List sources:
Aspens and Fall Foliage in Utah, Jeffrey Otis Schmerker, 2001, https://www.utah.com/schmerker/2001/fall_foilage.htm

Ogden Valley Business Association, https://www.utahfallcolors.com

Fall Colors Tour, Utah in the Fall is a blast of color!, https://www.utah.com/byways/fallcolorstour.htm

National Forest Fall Color Hotline, 1-800-354-4595,https://www.fs.usda.gov/detail/r4/recreation/?cid=fsbdev3_016189

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Encountering Cheatgrass

Encountering Cheatgrass: Click to view an article about cheatgrass, Cheatgrass Photo Courtesy NPS, Photographer Tom Heutte, USDA Forest Service, Bugwood.org
Cheatgrass
Photo Courtesy NPS, Photographer:
Tom Heutte, USDA Forest Service,
Bugwood.org

Click to view an article about cheatgrass, Photo Courtesy NPS, Neal Herbert, PhotographerA grassland inundated by cheatgrass
Photo Courtesy NPS
Neal Herbert, Photographer

Hi, this is Mark Larese-Casanova from the Utah Master Naturalist Program at Utah State University Extension.

It’s difficult to visit a landscape in the West without encountering cheatgrass. While cheatgrass’ small stature might make it hard to notice, it’s impossible to forget its sharp, spiny seeds. One hike through a cheatgrass meadow can render a good pair of socks unsalvageable.Encountering Cheatgrass

Although cheatgrass, a nonnative grass scientifically known as Bromus tectorum, is an annual grass- germinating, growing, producing seeds, and dying each year- it is particularly effective at colonizing disturbed areas because it grows and produces seeds much earlier in the spring than many perennial native grasses. Cheatgrass monopolizes water and nutrients by germinating and establishing itself during the previous fall and winter, when many native plants have become dormant. Over time, cheatgrass has become the dominant ground cover in many of Utah’s sagebrush ecosystems.

The dense, dry, fine stalks of cheatgrass, which sets seeds and dries out by June, are particularly flammable fuel for wildfires. Fire roars through the carpet-like cover of cheatgrass, and wildfires are now at least twice as frequent as they were in the 1800’s. This has caused a loss of sagebrush habitat that is particularly important to a wide diversity of wildlife. More frequent fires create an even greater challenge for rare species such as the black-footed ferret and desert tortoise to survive. Native grasses are slower to recover from fire, and cheatgrass is particularly effective at recolonizing burned areas. Utah State University researchers Dr. Peter Adler and Aldo Compagnoni have found that reduced snowpack and warmer temperatures promote the growth of cheatgrass, which could potentially increase its distribution and fire risk into previously colder areas of Utah.

Researchers and managers are continually working to find ways to control cheatgrass in Utah. Effective control usually involves a combination of mechanical pulling or tilling, grazing, burning, spraying with a chemical herbicide, and replanting with native grasses. USU researchers Dr Eugene Schupp and his former graduate student Jan Summerhays found that applying a pre-emergent herbicide to prevent the germination of cheatgrass seeds, as well as temporarily limiting Nitrogen in the soil, gave native grasses and perennials a better chance of establishing. When faced with such a large management problem in Utah and throughout the West, we can use all of the helpful tools we can get.

For Wild About Utah, I’m Mark Larese-Casanova.

Credits:

Images: Courtesy NPS, Neal Herbert Photographers
and NPS, USDA Forest Service, Bugwood.org, Tom Heutte Photographer
Text:     Mark Larese-Casanova, Utah Master Naturalist Program at Utah State University Extension.

Additional Reading:
Beck, George. Cheatgrass and Wildfire. Fact Sheet No. 6.310. Colorado State University Extension. https://www.ext.colostate.edu/pubs/natres/06310.html
Cheatgrass. Range Plants of Utah. https://extension.usu.edu/range/Grasses/cheatgrass.htm

Fairchild, John. Cheatgrass: threatening homes, stealing rangelands. Utah Division of Wildlife Resources. https://wildlife.utah.gov/watersheds/links/cheatgrass.php

Opsahl, Kevin. USU study: Climate shift could trigger cheatgrass. Herald Journal . October 21, 2012. https://news.hjnews.com/allaccess/article_f1436aee-1a3c-11e2-935a-0019bb2963f4.html

Forero, Leslie, Plants Surviving Cheatgrass Invasion May Improve Restoration Chances, Study Shows, UPR Utah Public Radio, Feb 26, 2018 https://www.upr.org/post/plants-surviving-cheatgrass-invasion-may-improve-restoration-chances-study-shows

Larese-Casanova, Mark, Cheatgrass, Wild About Utah, October 25, 2012 https://wildaboututah.org/cheatgrass/