Great Salt Lake Mirabilite Mounds

Mirabilite Mounds in the Great Salt Lake Courtesy & © Mary Heers, Photographer
Mirabilite Mounds
in the Great Salt Lake
Courtesy & © Mary Heers, Photographer
Back in October 2019, the ranger at the Great Salt Lake State Park began to notice a white mound forming on the sand flats behind the visitor center. The white mounds turned out to be hydrated sodium sulfate – known as mirabilite- which was being carried to the surface by the upwelling of a fresh water spring. Since the 1940’s geologists have known that in this area, 30 inches below the surface, there was a 3 – 6 foot thick shelf of mirabilite. They knew about the fresh water springs What was new was cold air. Since this stretch of sand was no longer underwater, the mirabilite carried to the surface stayed there as crystals, piling up on each other, puddling and spreading out. One mound rose to the height of 3 feet.

Mirabilite Springs in the shadow of the Kennecott Smelter stack Courtesy & © Mary Heers, Phorographer
Mirabilite Springs in the shadow of the Kennecott Smelter stack
Courtesy & © Mary Heers, Phorographer
When the mounds started to form again this winter, I jumped at the chance to to go and take a look. I must admit at first I was a little underwhelmed at the size, perhaps because the Kennecott Smelter Stack nearby dominates the view, rising to 1,215 feet – roughly the same height as the Empire State Building. But the park ranger got my attention when she told us that mirabilite mounds have only been seen in four places in the entire world – the Canadian Arctic, Antarctica, Central Spain, – and Utah. Just seeing them turns out to be a rare winter treat. When the air warms to 50 degrees, the mirabilite will crumble into a fine white powder and disappear.

Robert Smithson's Spiral Jetty (1970) Courtesy & © Mary Heers, Photographer
Robert Smithson’s Spiral Jetty (1970)
Courtesy & © Mary Heers, Photographer
My mind flashed back to a trip I’d made to the other end of the lake ten years ago. I’d just graduated from the docent training class at the Utah Museum of Fine Art, and a friend and I wanted to celebrate by having High Tea at the center of the Spiral Jetty, a 1,500 foot, long, 15 foot wide coil of black basalt rock – a stunning example of land art jutting out from the northern shore. We’d been warned that it might be underwater, but when we arrived we were delighted to find we could easily walk to the very center of the spiral as the lake water gently lapped at the edges of our shoes. We clinked our tea cups, and toasted the greatness of the lake.

Suddenly I wanted to see the jetty again, so I hopped in my car and drove to the remote site. I saw the Spiral Jetty was now high and dry. Drifting sand had already started to bury parts of it. The water’s edge was now over 300 yards away. I thought of the millions of migratory birds that would be arriving in the spring to rest and feast on the tiny treasures of the lake, the brine shrimp. I hoped a smaller lake would still be enough for all of them.

The recent words of the director of Friends of the Great Salt Lake, Lynn de Freitas, rang in my head: “The Great Salt Lake is a gift that keeps on giving. Just add water.”

This is Mary Heers and I’m Wild About Utah.

Credits:
Photos: Courtesy & Copyright Mary Heers, Photographer
Featured Audio: Courtesy and Copyright Kevin Colver https://wildstore.wildsanctuary.com/collections/special-collections/kevin-colver
Text & Voice: Mary Heers, Generous Contributor, Utah Public Radio
Additional Reading: Lyle Bingham, Webmaster Bridgerland Audubon Society

Additional Reading

Mirabilite Spring Mounds Near Great Salt Lake Marina, Utah Geological Survey (UGS), Utah Department of Natural Resources, https://geology.utah.gov/popular/general-geology/great-salt-lake/mirabilite-spring-mounds/

Mirabilite, Mindat.org, Hudson Institute of Mineralogy, https://www.mindat.org/min-2725.html

Tabin, Sara, Rare salt formations return to Great Salt Lake’s shores; take a tour while they last, The Salt Lake Tribune, Jan. 13, 2021, https://www.sltrib.com/news/2021/01/14/rare-salt-formations/

USGS 412613112400801 The Great Salt Lake at Spiral Jetty, Site Map for the Nation, U.S. Geological Survey(USGS), U.S. Department of the Interior, https://waterdata.usgs.gov/nwis/nwismap/?site_no=412613112400801&agency_cd=USGS

Case, William, GEOSIGHTS: PINK WATER, WHITE SALT CRYSTALS, BLACK BOULDERS, AND THE RETURN OF SPIRAL JETTY!, Survey Notes, v. 35 no. 1, Utah Geological Survey (UGS), Utah Department of Natural Resources, January 2003, https://geology.utah.gov/map-pub/survey-notes/geosights/spiral-jetty/

Board & Staff, Friends of the Great Salt Lake, https://www.fogsl.org/about/board-staff

Salt Lake Brine Shrimp, https://saltlakebrineshrimp.com/harvest/

The Bees and the Birds

The Bees and the Birds: The Bee Courtesy & Copyright Shannon Rhodes, Photographer
The Bee
Courtesy & Copyright Shannon Rhodes, Photographer

The Bees and the Birds: The Bird [A Mallard Drake] Courtesy & Copyright Shannon Rhodes, Photographer The Bird
[A Mallard Drake]
Courtesy & Copyright Shannon Rhodes, Photographer

March is a thrilling month to be in an elementary school. Besides fifth grade maturation sessions, shamrocks pop up and many spotlight the impact of Dr. Seuss. Besides green eggs and ham eaten by children wearing tall red and white hats, we read and re-read books filled with fanciful characters and rhymes that roll off the tongue. I learned this year along with my students that Dr. Seuss’s father was the superintendent of parks in Springfield, Massachusetts, so naturally young Theodor took his sketchpad and pencil to observe and record whenever he could. When an animal lost an antler at the zoo, he would use it to craft a sculpture just as whimsical as the imaginative ones in his books. He called them pieces of The Seuss System of Unorthodox Taxidermy and placed them early in his career as promotional advertisements in bookshops. Kangaroo Bird with its teal stripes and pouch-perched hatchling and the Andulovian Grackler’s fur tufts and orange bill intrigue me. He also painted the stunning “The Birds and the Trees” featuring a white flock flying between red and pink palm trees that inspired the Dadake Day in “Oh the Thinks You Can Think.” As we studied Dr. Seuss’s “Did I Ever Tell You How Lucky You Are?” released 50 years ago this year, students noted how many birds appeared in the pages, leading us to do a Seuss bird scavenger hunt, our version of the birding counts chronicled in Mark Obmascik’s “The Big Year: A Tale of Man, Nature, and Fowl Obsession” (that’s f-o-w-l).

I do know I was lucky to teach once on a fifth grade team with a man students called Mr. J. Among many other things, he taught them how to recognize and identify birds. He preserved a time each day to review birds they had learned and add facts about a new species, how it looks, how it sounds, and how it behaves. He could display photographs and even silhouettes; students knew the shapes enough to identify them. He could play short audio clips, and students shouted out the corresponding birds too. I’ve discovered since The Bird Song Hero app that provides a spectrogram showing pitches visually that allow people like me another way to memorize those various bird songs. I remember I popped in the day they were discussing how our loggerhead shrike impales insects, rodents, snakes, and lizards on fences and really anything sharp and off the ground. When we took them on the bus through the Bear River Migratory Bird Refuge, I couldn’t believe my ears as kids with binoculars and without them were confidently shouting, “I see…” and tallying on their clipboards. For weeks that spring I would find students at recess peering up in the sky above the schoolyard doing the same thing. When I marveled at this phenomenon, Mr. J. smiled. “You know, Shannon, it isn’t about the birds. It’s about being aware.”

So often his “It’s about being aware” mantra pops in my head, like it did this week when my students huddled around our class pet cage housing a bee that emerged early from my Crown Bee tube “free-bee” from a recent science-teaching conference. Just like Dr. Seuss’s Bee-Watcher-Watchers, these six- and seven-year-olds eagerly missed romping in the fresh powder playground to watch a bee perched on a strawberry. I’ve done the same thing, standing mesmerized, lost in thought, watching a bee on a western coneflower, repeating the Seuss rhyme “Just tell yourself, Duckie, you’re really quite lucky.”

For Wild About Utah, I’m Shannon Rhodes.

Credits:

Images: Courtesy & Copyright Shannon Rhodes, Photographer
Audio: Courtesy & © Friend Weller, https://upr.org/
Text:     Shannon Rhodes, Edith Bowen Laboratory School, Utah State University https://edithbowen.usu.edu/
Additional Reading Links: Shannon Rhodes

Additional Reading:

Wild About Utah Pieces by Shannon Rhodes, https://wildaboututah.org/author/shannon-rhodes/

The Art of Dr. Seuss Collection. The Birds and the Trees. https://www.drseussart.com/the-birds-and-the-trees

The Art of Dr. Seuss Collection. The Bee-Watcher. https://www.drseussart.com/illustration-art/the-bee-watcher

The Art of Dr. Seuss Collection. The Seuss Collection of Unorthodox Taxidermy. https://www.drseussart.com/taxidermy

Bird Song Hero. https://academy.allaboutbirds.org/features/bird-song-hero/bird-song-hero-tutorial

Cane, Jim. The Native Bees of Utah. July 7, 2011. Wild About Utah. https://wildaboututah.org/the-native-bees-of-utah/

Kervin, Linda. Shrikes. October 31, 2013. Wild About Utah. https://wildaboututah.org/shrikes/#:~:text=Utah%20has%202%20species%20of,with%20their%20thick%20hooked%20bill .

Newberry, Todd & Holtan, G. (2005). The Ardent Birder: On the Craft of Birdwatching. Random House LLC. https://www.amazon.com/Ardent-Birder-Birdwatching-Newberry-2005-10-01/dp/B01FGJKGUS?asin=1580087159&revisionId=&format=4&depth=1

Obmascik, Mark. The Big Year. https://www.markobmascik.com/books/ and https://www.audubon.org/content/mark-obmascik

Seuss, Dr. Did I Ever Tell You How Lucky You Are? (1973). New York: Random House.https://www.penguinrandomhouse.com/books/42980/did-i-ever-tell-you-how-lucky-you-are-by-dr-seuss/

Seuss, Dr. Oh the Thinks You Can Think. (1975). New York: Random House.https://www.penguinrandomhouse.com/books/43101/oh-the-thinks-you-can-think-by-dr-seuss/

Team Fishing White Pelicans

American White Pelicans at the Bear River Migratory Bird Refuge Courtesy & Copyright © Mary Heers
Pelicans at the Bear River Migratory Bird Refuge
Courtesy & Copyright © Mary Heers

American White Pelicans Fishing at the Bear River Migratory Bird Refuge Courtesy & Copyright © Mary Heers American White Pelicans Fishing
at the Bear River Migratory Bird Refuge
Courtesy & Copyright © Mary Heers

Jordan Falslev's Pelican Perch at the Benson Marina on Cutler Reservoir, Click to view a larger image. Courtesy & Copyright © Mary Heers Jordan Falslev’s Pelican Perch
at the Benson Marina on Cutler Reservoir,
Click to view a larger image.
Courtesy & Copyright © Mary Heers

I first caught sight of the eight pelicans swimming in s straight line towards the waters edge, looking a lot like a tank division in in an old WWII movie I slammed on the brakes just in time to see them all dip their bills into the water, come up spilling water and cock their heads back And then, gulp! Fish slid down their throats.

Wow, I thought. These pelicans are working together to to drive the fish into the shallow water’s edge where they can easily scoop the up And then it got better. Fanning out, the pelicans regrouped in a circle Swimming towards the center, they tightened the noose. And bam! Dip, scoop, knock back some more fish

I was amazed at how soundless and seamless it all was and could have watched for hours, but I was on the one lane auto route at the Bear River Migratory Bird Refuge and the cars behind me were starting to honk their horns, so I reluctantly moved on.

As soon as I got home I plunged into research on this majestic bird, beginning with the bill. When the pelican dips its bill into the water, the lower portion expands into a flexible sac that allows the bird to to scoop up as much as 3 gallons of fish and water. When the pelican cocks back its head, the sac contracts, the water is expelled through a barely open bill, and the fish swallowed. The huge pelican bill, which at first glance looks like a formidable weapon, is actually an exquisitively designed fishing net.

Archeologists have found pelican skulls dating back 30 million years, so this unique bill has definitely passed the test of time.

Back at the refuge I was able to turn into a visitor pull out and pick up the rather stunning bit of information: these pelicans fly in from Gunnison Island in the Great Salt Lake, over the Promontory Mountains, daily to forage for fish. That’s a 30 mile trip each way!

Long before the Mormon pioneers arrived in Utah, pelicans were building their nest on Gunnison Island. They were briefly disturbed when an artist, Albert Lambourne, tried to homestead for a year in 1850, and a guano mining company dropped off a crew – a Pole, a Russian, a Scot and an Englishman- to mine the bird poop. But the operation wasn’t profitable, and when it closed down, the pelicans reclaimed the island. Each March the birds fly in from as far away as Mexico, build their nests, and raise their chicks. The rookery is the largest in the US. In 2017 the pop was estimated to be as high as 20,000.

Back in Cache Valley in 2010, Jordan Falslev built a viewing platform near Benson Marina, The Pelican Perch, as his Eagle scout project. There used to be hundreds of pelicans out there on the water, but when I stopped by last week I didn’t see a single one. Numbers are way down now largely because the dropping water level in the Great Salt Lake have exposed a land bridge to Gunnison Island that allows predators to ravage the nesting site.

You can still catch sight of a pelican in flight in Cache Valley. (Their wingspan is 10 ft. Rudy Gobert, in comparison, has a wingspan of 7 ft 9 in.) But for my money, the best show in town is watching packs of pelicans hunt for fish at the Bear River Migratory Bird refuge.

This is Mary Heers and I am Wild About Utah.

Credits:

Photos: Courtesy & Copyright © Mary Heers
Featured Music: Courtesy & Copyright © Anderson, Howe, Wakeman
Text: Mary Heers
Voice: Mary Heers

Additional Reading

American White Pelican Pelecanus erythrorhynchos, Species, Utah Division of Wildlife Management, Utah Department of Natural Resources, https://wildlife.utah.gov/fieldguide/species.html?q=pelecanus+erythrorhynchos [Updated February 9, 2026]

American White Pelican (AWPE), Aquatic Birds, Great Salt Lake Bird Survey 1997-2001, Utah Division of Wildlife Management, https://wildlife.utah.gov/gsl/waterbirdsurvey/awpe.htm

Larsen, Leia, As Great Salt Lake shrinks, fate of nesting pelicans unknown, Standard Examiner, October 11, 2015, https://www.standard.net/news/environment/2015/oct/11/as-great-salt-lake-shrinks-fate-of-nesting-pelicans-unknown/ [Link updated January 2024]

Butler, Jaimi, The Great Salt Lake Is An ‘Oasis’ For Migratory Birds, Science Friday, September 21, 2018, https://www.sciencefriday.com/segments/the-great-salt-lake-is-an-oasis-for-migratory-birds/

Hager, Rachel, Great Salt Lake Pelicans Under Threat, Utah Public Radio, May 28, 2018, https://www.upr.org/post/great-salt-lake-pelicans-under-threat

Leefang, Arie, Gunnison Island, Heritage and Arts, Utah Division of State History, September 16, 2019, https://history.utah.gov/exploring-the-history-and-archaeology-of-the-great-salt-lakes-gunnison-island/

Hoven, Heidi, Gunnison Island: Home of up to 20,000 nesting American White Pelicans, Audubon California, National Audubon Society, September 25, 2017, https://ca.audubon.org/news/gunnison-island-home-20000-nesting-american-white-pelicans

The low-speed stampede, Wildlife Blog, Utah Division of Wildlife Resources, https://wildlife.utah.gov/news/wildlife-blog/701-the-low-speed-stampede.html

The paths of pelicans, Wildlife Blog, Utah Division of Wildlife Resources, https://wildlife.utah.gov/news/wildlife-blog/428-the-paths-of-pelicans.html

Brewerton, Adam, Round Trip Flights: Salt Lake City to Mazatlan, Wildlife Blog, Utah Division of Wildlife Resources, February 25, 2016, https://wildlife.utah.gov/news/wildlife-blog/698-round-trip-flights-salt-lake-city-to-mazatlan.html

Christmas Bird Count December 2022

Christmas Bird Count December 2022: Cassin's Finch, Carpodacus cassinii Courtesy US FWS, Dave Menke, Photographer
Cassin’s Finch, Carpodacus cassinii
Courtesy US FWS, Dave Menke, Photographer

Male House Finch in Mating Plumage, Haemorhous mexicanus, Courtesy US FWS Gary Kramer, Photographer Male House Finch in Mating Plumage
Haemorhous mexicanus
Courtesy US FWS, Gary Kramer, Photographer

Audubon chapters everywhere invite volunteers to join the 123rd Christmas Bird Count, and that means it’s time to hone our bird watching skills for the longest-running community science project. Seasoned birders and beginners alike spend a few minutes or a full day on this annual census of birds. Those just starting to notice birds can be valuable spotters in the mobile sectors, and can quickly learn to observe the subtle differences between similar species seen from the comfort of home, where no bird feeder is required, and valuable contributions can be made with just a few minutes of counting birds.

The Bridgerland Audubon Society launched the Cache Christmas Bird Count watch circle in 1955, contributing to a tradition launched in1900 by ornithologist Frank M. Chapman who out of concern for dwindling bird populations managed to change the culture from annual Christmas bird shooting contests into bird counting contests. Bridgerland Audubon always schedules on the first Saturday on or following December 14th, and typically documents about 100 species of birds.

The Cache Valley watch circle is divided into eleven sectors, including a 4 a.m. owling sector, and includes all homes within a 7.5 mile radius from the center of the circle which is located at Main Street & Hyde Park Lane (Hwy 91 & 3600 N). The same 15-mile diameter watch circle is surveyed each December – that’s about 177 square miles, and we can use all the help we can get, especially from folks watching from home. Don’t worry if you can’t identify all of the birds you see – you will just report the ones you do recognize. You can also get help by posting photos to the Bridgerland Audubon Facebook group, where you’ll also see posts about the Dark-eyed Junco, a small dark bird with a white belly, and subspecies which include the Oregon Junco with a black hood and neck, the Pink-Sided, the Gray-headed, and the Slate Junco.

The Home Sector provides a lot of extra data on about 32 species, the most common of which are available on a one page photo-illustrated checklist on the Bridgerland Audubon website where you will also find links to the free Merlin App which identifies birds by their songs. The Visitors Bureau has a nice selection of Utah Bird field guides which are great for beginners.

Bird identification is all about learning to notice the little differences in size, coloration patterns, shape of the beak, the crown of the head, and the tip of the tail. For example a House Finch and a Cassin’s Finch may look the same at first glance, but the House Finch has streaks on the side of the body, a rounded tail tip, and the red over the eyes is more like a headband than a top hat. The Cassin’s Finch has a notched tail, red cap, and lacks those streaks on the breast and and sides. The Pine Siskin looks like a tiny House Finch but it has a hint of yellow on its wings and the beak is more delicate and pointed. Large flocks of birds can be counted by blocking off a group of individuals, counting them, and then extrapolating to the whole of the flock. Don’t forget that zero is a number to report!

Visit Audubon.org to find a Christmas Bird Count near you, and visit bridgerlandaudubon.org to join the local count sector leaders on Saturday, December 17th, 2022. Pre- registration is free but required.

I’m Hilary Shughart with Bridgerland Audubon and I am Wild About Utah!

Credits:
Images: Courtesy US FWS, Dave Menke and Gary Kramer, Photographers
Featured Audio: Courtesy & Copyright © Kevin Colver, https://wildstore.wildsanctuary.com/collections/special-collections/kevin-colver
Text: Hilary Shughart, President, Bridgerland Audubon Society
Additional Reading: Hilary Shughart and Lyle Bingham, https://bridgerlandaudubon.org/

Additional Reading

WildAboutUtah pieces by Hilary Shughart, https://wildaboututah.org/author/hilary-shughart/

Liberatore, Andrea, Dark-eyed Juncos, Wild About Utah, January 12, 2012, https://wildaboututah.org/dark-eyed-juncos/

Greene, Jack, Juncos, Wild About Utah, December 21, 2020, https://wildaboututah.org/juncos/

Bridgerland Audubon CBC Toolkit https://bridgerlandaudubon.org/our-projects/cache-valley-christmas-bird-count/

National Audubon Data: Annual Summaries of the Christmas Bird Count, 1901-Present https://www.audubon.org/content/american-birds-annual-summary-christmas-bird-count

Tips from eBird on How to count large flocks of birds:
“Big numbers of Moving Birds. Their are two ways to count large flocks of moving birds: either by blocking off a group of individuals, counting them, and then extrapolating to the whole of the flock; or by counting birds per unit of time.”
Team eBird, Bird Counting 101, eBird is a project of the Cornell Lab of Ornithology, https://ebird.org/news/counting-101/

General Tips for Bird Identification:
Mayntz, Melissa, Bird Bill Parts, The Spruce, Updated on 08/01/22, https://www.thespruce.com/bird-bill-parts-387362

Sibley Guides, The annual plumage cycle of a male American Goldfinch, https://www.sibleyguides.com/2012/05/the-annual-plumage-cycle-of-a-male-american-goldfinch/

Lesser Goldfinch-Similar Species Comparison, All About Birds, The Cornell Lab of Ornithology, https://www.allaboutbirds.org/guide/Lesser_Goldfinch/species-compare/

House Finches, Purple Finches, and Cassin’s Finches, All About Birds, Cornell Lab of Ornithology, Cornell University, https://academy.allaboutbirds.org/finches-with-red-id-quiz/

Junco Coloring Page:
https://www.supercoloring.com/coloring-pages/dark-eyed-junco?version=print

Utah-Centric Books & Field Guides:
Tekiela, Stan, Birds of Utah Field Guide, Adventure Publications, Apr 21, 2003, https:// www.amazon.com/Birds-Utah-Field-Guide-Tekiela/dp/1591930197/

Fenimore, Bill, Backyard Birds of Utah: How to Identify and Attract the Top 25 Birds, Gibbs Smith, March 27, 2008, https://www.amazon.com/Backyard-Birds-Utah-Identify- Attract/dp/1423603532/

Kavanagh, James, Utah Birds: A Folding Pocket Guide to Familiar Species (Wildlife and Nature Identification) Pamphlet, Waterford Press, September 1, 2017, https:// www.amazon.com/Utah-Birds-Folding-Familiar-Naturalist/dp/1583551328/