Nutcrackers and Squirrels, Farmers of the Forests

Nutcrackers and Squirrels, Farmers of the Forests

Clark’s Nutcracker
Nucifraga columbiana
Courtesy US FWS
Dave Menke, Photographer

Nutcrackers and Squirrels, Farmers of the Forests
Red Squirrel
Tamiasciurus hudsonicus
Courtesy US FWS
Donna Dewhurst, Photographer

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

Throughout Utah’s forests, many plants and animals take advantage of other organisms to survive. Whether it is a caterpillar eating a tree leaf, mistletoe growing on a juniper branch, or an owl catching a mouse to eat, one organism being consumed by another is almost inevitable. However, some organisms may inadvertently help others not only survive, but also increase their range.

Many conifer trees, including pines, spruces, and firs, depend on fungi that live in and around their roots. The fine fibers of the fungi act as root hairs, helping trees better absorb water and nutrients from the soil. Some fungi also have symbiotic relationships with bacteria that are able to take Nitrogen from the air and turn it into ammonia, which is one of the forms of nitrogen that helps plants grow. Conifer trees reproduce via seeds from their cones, and fungi produce mushrooms to release spores. Squirrels happen to find conifer seeds and mushrooms particularly tasty, and will readily eat them. As squirrels are known to do, extra food is cached away for winter, and some seeds and mushrooms are inevitably forgotten. This helps disperse seeds and spores, aiding in population growth. So, the fungus helps the tree grow, the tree and fungus provide food for the squirrel, and the squirrel helps the tree and fungus spread to new areas.

The Clark’s nutcracker, a bird closely related to the crow and raven, is also particularly important in aiding in the spread of pine trees. Living at higher elevations, nutcrackers must store food for the long winters on Utah’s mountains. A nutcracker’s stout beak is used to crack open pine cones to retrieve the seeds inside. It stores seeds in a pouch under its tongue, and flies away to cache the seeds for winter. Each Clark’s nutcracker stores tens of thousands of seeds every year. While many seed caches are found and eaten, some are forgotten and germinate into young saplings.

So, while squirrels and nutcrackers are ultimately just looking for a good meal, both play a crucial role in establishing and maintaining healthy forest ecosystems in Utah’s mountains. For Wild About Utah, I’m Mark Larese-Casanova.

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

Credits:
Images: Courtesy US FWS images.fws.gov
Text:     Mark Larese-Casanova, Utah Master Naturalist Program
            at Utah State University Extension.


Additional Reading:

Cornell Lab of Ornithology. Clark’s nutcracker. http://www.allaboutbirds.org/guide/Clarks_Nutcracker/id

Larese-Casanova, M. Utah Master Naturalist Mountains Wildlife Field Guide. Utah State University Extension. 2012.

Maser, C., and Z. Maser. 1988. Interactions among squirrels, micorrhizal fungi, and coniferous forests in Oregon. The Great Basin Naturalist 48(3):358-369.

US Forest Service. Clark’s Nutcracker. http://www.fs.fed.us/database/feis/animals/bird/nuco/all.html#FOOD%20HABITS

Washington Department of Fish and Wildlife. Living with Wildlife: tree squirrels. http://wdfw.wa.gov/living/tree_squirrels.html

Feed the Birds

Pine Siskins and an
American Goldfinch feed
feed on thistle from a sock feeder
Copyright © 2008 Jim Cane

Hopper Feeder
Copyright © 2008 Jim Cane

Hopper Feeder with Squirrel
Copyright © 2008 Jim Cane

Suet Feeder
Copyright © 2008 Jim Cane

Many of our songbirds have flown south to spend the winter. I confess that on frigid days I envy them. Like you and I, though, many birds remain behind. They fluff their feathers to trap body heat and spend these short days in a perpetual hunt for food to keep them warm. You can help their hungry quest by feeding our diverse songbirds using a convenient birdfeeder.

For loose seed, I use a hopper feeder. The hopper resembles a tiny roofed house which is filled with seed that is dispensed from a trough at its base. Another common style of seed feeder is a broad tray. It will need a roof and drain holes to keep the seed dry and free of mold.

(Kevin Colver: Birds of the Rocky Mountain Foothills. Dark-eyed Junco)

Our feeder is above a stone walkway for birds like juncos that prefer seed spilled on the ground. A ring of upturned tomato cages around this area excludes cats, and the season’s discarded Christmas tree will provide cover for the birds.

(Kevin Colver: Birds of the Rocky Mountain Foothills. Black-capped Chickadee)

Chickadees and finches prefer black oil sunflower seed, rich in fats and proteins, with a thin shell. If you buy seed mixes, juncos and sparrows will take white millet, but milo or so-called red millet is a filler. Doves and jays like cracked corn.

(Kevin Colver: Songbirds of Yellowstone. Pine Siskin)

Goldfinches and pine siskins flock to Niger thistle seed dispensed from a fine mesh sock that you can buy where you purchase the seed. Woodpeckers and nuthatches appreciate a suet feeder, which is a wire mesh cage containing a block of seed-filled suet. Expect magpies to hammer chunks off the suet block occasionally.

Don’t forget water, a scarce commodity for birds in winter. Plug in models remain ice free with scant power use.

Nothing quite cheers a wintry day for me like colorful songbirds noisily bustling at our feeders. If you do put up feeders, consider joining in Project Feeder Watch. You can find details on our Wild About Utah website.

Credits:

Photo: Courtesy & Copyright 2008 Jim Cane, Bridgerland Audubon Society, www.bridgerlandaudubon.org
Text: Jim Cane & Linda Kervin, Bridgerland Audubon Society

Bird Recordings Courtesy and Copyright Dr. Kevin Colver,7loons.com & WildSanctuary, Soundscapes, http://www.wildsanctuary.mobi
/buy/index.php?route=product/category&path=40

Additional Reading:

Backyard Bird Feeding, US Fish & Wildlife Service, http://library.fws.gov/Bird_Publications/feed.html

Project Feederwatch, Cornell Lab of Ornithology, http://www.birds.cornell.edu/pfw/

How to Attract Birds to your Yard, All About Birds, Cornell Lab of Ornithology, http://www.allaboutbirds.org/Page.aspx?pid=1138

The Great Backyard Bird Count, Birdsource.org, http://www.birdsource.org/gbbc/

Creating landscapes for Wildlife — A Guide for Backyards in Utah, A production of the Utah Division of Wildlife Resources, Utah State University Cooperative Extension Service & Department of Landscape Architecture and Environmental Planning, http://digitallibrary.utah.gov/awweb/awarchive?type=file&item=10215