Field Notes

Sunday 12:55 PM, Tuesdays and Fridays at 4:54 PM

For keen observers, a walk to the grocery store or a hike up a mountain can inspire questions. Where do magpies nest?  Why doesn’t a spider stick to its own web? How do water striders keep from sinking?  Every week since 1992, Field Notes has inquired about Montana's  natural history. Produced by the Montana Natural History Center, Field Notes are written by naturalists, students and listeners about the puzzle-tree bark, eagle talons, woolly aphids and giant puffballs of Western, Central and Southwestern Montana.

Interested in writing a Field Note? Contact Allison De Jong, Field Notes editor, at adejong [at] montananaturalist.org or (406) 327-0405.

Flickr user, Charles Peterson

"By the 1930s, conservation groups across North America teamed up to help save the trumpeter, of which only 69 were known to exist. Various projects restored and increased breeding, wintering and wetland habitat, including the new Red Rock Lakes National Wildlife Refuge in southwest Montana. Trumpeter populations rebounded and reached almost 35,000 swans by 2005.

Roger Wollstadt

"By the 1880s, bison numbers had dropped from millions to scant hundreds. Few people in the densely populated East viewed the coming extinction of the bison as an ecological and cultural loss. Naturalist William Temple Horaday was one of the first people to call for the conservation of bison, along with his friend, Theodore Roosevelt. Hornaday, chief taxidermist at the Smithsonian Institute, was outraged that the slaughter of bison was allowed to occur.

Flickr user, Seabamirum

Their cryptic brown and white coloration makes ruffed grouse hard to see - often, the first sign you'll have of one is the deep sound of wings flapping, followed by an eruption of feathers nearby. A classic sound of spring in areas where ruffed grouse live is the booming sound of the male grouse, drumming atop a rock or log or mound, simultaneously announcing and defending its 6-10 acre territory. The sound has been described as "an engine trying to start."

Flickr user, Ian Jacobs

"It was fall, and my favorite heirloom house plant had outgrown its container, so I replanted it in a larger pot. To do this, I used some potting soil that had been sitting in sacks in the backyard. Soon after, the house was teeming with little flies. I knew they came from the potted plant, but I had no idea what they were. It turns out they were dark-winged fungus gnats, which feed off fungus in potting soil. These persistent little insects have followed me from one rental house to another over the past two years.

Flickr user, Tim Evanson

"In the late Cretaceous period, from 90 to 65 million years ago, Montana had a lusher climate than today. The Rocky Mountains formed one edge of a vast inland sea - Fort Peck was beachfront property on the edge of that sea. There are three distinct sedimentary rock formations from that era running through the area. The T. rex, "Peck's Rex," was found in the Hell Creek formation in 1997, just inland from the ancient coast. The sparsely-fossilized Fox Hill sandstone is a remnant of the beach itself.

Flickr user, Bev Sykes

"Bat Hearing," written by Erick Greene, read by Caroline Kurtz.

"Most people know that bats are able to perceive their surroundings using ultra high frequency sonar. But how exactly do they do it?

Flickr user, Putneypics

"Birds and Seeds," by Brian Williams.

Flickr user, Jason

"An Insect's Guide To Surviving the Winter," written by Ashley King, read by Caroline Kurtz.

With the help of fur, hair, or clothing, warm-blooded mammals keep a consistent internal temperature, no matter the air temperature. That's not true for insects. How do they survive the cold of winter? 

United States Fish and Wildlife Service

Walking around old-growth forests this winter, if you're lucky enough to see fur-lined tracks leading to the base of a tree, or scat containing porcupine quills, look up. Scan the treetops. You might catch a glimpse of a marten or a fisher, two members of the mustelid family that roam Montana's winter landscape.

Flickr user, Sandor Weisz

"Plant Morphology in the Supermarket," by Peter Lesica and Annie Garde.

Liz Rohde

"Mount Aeneas," by Margo Whitmire.

Manith Kainickara, U.S. Fish & Wildlife Service

"Dance of the Sandhill Crane," written by Clare Antonioli, read by Caroline Kurtz.

"Why do sandhill cranes dance? There are several theories. They may be establishing territories, or they may be warning other cranes of possible danger, but the most widely accepted theory is that the dance is a mating ritual. However, sandhill cranes dance all the time, even when they aren't mating, so how could a dance be only a mating ritual? Even juveniles, who are not of mating age, dance.

Mattknight

"Daddy Longlegs," written by Melissa Zapisocky, read by Caroline Kurtz

Flickr user, Seabamirum

"Starling Obfuscation," by Robin Childers.

Joel Penner

"Pine Squirrel Caches," written by Caitlin Fox, read by Caroline Kurtz.

"Last September, I went on a hunt for buried treasure. I had heard of a man who put himself through college collecting pine nuts from squirrels' winter caches and selling them to the local grocer. He must have learned their hiding places and robbed their summer's work in late fall. I had pictured uncovering stores of hundreds of smooth, white pine nuts, individually shelled, like candy.

Jared Tarbell

"Lichens," written by Ted Morrison, read by Caroline Kurtz.

"As I belayed my partner up to the ledge, I examined the colorful world on the rock in front of me. The closer I looked, the more I saw. The small cracks in the mat of lichen surged like huge crevasses in a microworld, curving and breaking with the topography of the rough granite. The small polygons of green were flecked by a multitude of browns and grays.

Mint Evolution

Sep 12, 2014
Flickr user, Dendroica cerulea

"Mint Evolution," by David Kerber.

Ravens At Play

Sep 5, 2014
Niccolò Caranti

"Ravens At Play," written by Michael K. Schwartz, read by Caroline Kurtz.

Fredlyfish4

"Reflections on Wilderness," by Allison Linville.

Malcolm M. Furniss and Parks Canada

Pine beetle chirps are too quiet for humans to hear, but they play an important role in beetle courtship.

Bob MacInnes

"Squirrel Behavior," written by Tracy Wendt, read by Caroline Kurtz.

Roger Lynn

"Blodgett Canyon," written by Ben Johnson, read by Caroline Kurtz.

Tom Friedel

"Striped Skunk," by Peggy Miller, read by Allison De Jong.

John Picken

"Montana's Common Loons," by Ben Turnock, read by Caroline Kurtz.

Stump Stabber

Jul 18, 2014
Richard Bartz

"Giant Ichneumon Wasp," by Christine Wren.

Common Mergansers

Jul 11, 2014
Amanda Bales

7/13/14 & 7/14/14: This week on Fieldnotes: "Common Mergansers," written by Kristi Johnson, read by Allison De Jong.

Pinedrops

Jul 4, 2014
Dave Powell, USDA Forest Service, Bugwood.org

7/6/14 & 7/7/14: This week on Fieldnotes: "Pinedrops," by Peter Lesica, read by Anne Garde.

"All of our conifers form a symbiotic partnership with certain soil fungi. The fungus helps the tree get minerals and in return receives energy-rich carbohydrates. Pinedrops (Pterospora andromedea) insinuates itself into this partnership by taking some of those carbohydrates from the fungus.

Spiderwebs

Jun 27, 2014
Fir0002/Flagstaffotos.com.au

6/29/14 & 6/30/14: This week on "Fieldnotes:" "Spiderwebs," written by Deborah Richie and Lynn Tennefoss, read by Caroline Kurtz. 

Tree Bark

Jun 20, 2014
Jami Dwyer

6/22/14 & 6/23/14: This week on "Fieldnotes:" "Tree Bark," written by Peter Lesica, read by Anne Garde.

NOAA

6/15/14 & 6/16/14: This week on "Fieldnotes:" "Montana's Forgotten Fish," written by Bridger Cohan, read by Caroline Kurtz.

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