Migratory Birds and Coffee

Western Tanager
Courtesy & Copyright © 2010
Michael Fish

For many of us, the day has not truly begun until we hold a warm mug of richly flavored coffee in our hands. But how often have you considered where that coffee comes from and how its culture impacts wild Utah?

We tend to think of migratory birds as our residents who take a winter vacation to the south every year. But it is more truly the other way around. They are representatives from groups of tropical birds who venture north to take advantage of less crowded nesting and a seasonal abundance of food for their young. For instance, of the 49 species of true tanagers, only 4 summer in the United States. Much of our coffee originates in Central and South America and its production directly affects birds who fly north to nest in Utah.

Traditionally, coffee bushes are grown under a diverse canopy. Some of the trees in the overstory yield timber, others fix nitrogen and still others like papaya provide food. This multi-tiered habitat supports a wide variety of birds that is only exceeded by undisturbed tropical forest itself.

About twenty years ago, coffee production changed radically with the development of varieties that tolerate full sun. This has allowed huge areas of land to be cleared of forest and planted exclusively to row after row of coffee bushes that demand intensive management. More fertilizer and pesticides are needed leading to toxic runoff. Soil erosion increases. Much lovely bird habitat has been destroyed for this barren coffee monoculture. Many migratory bird populations are in trouble due to the loss of their forested winter habitats.

But there is hope for coffee lovers because many farmers still grow coffee in the traditional way. These grower-owned farms tend to be smaller and provide a more reliable income for the farmer due to the diversity of crops. Soil quality is maintained while providing critical habitat for tropical frogs, insects, plants and birds. When purchasing coffee, look for bird friendly or shade grown or certification by Rainforest Alliance or Smithsonian. Our warblers, tanagers and thrushes will thank you.

This is Linda Kervin for Bridgerland Audubon Society.

Credits:

Images: Courtesy & Copyright Michael Fish
Text: Linda Kervin, Bridgerland Audubon Society

Additional Reading:

Shade-Grown Coffee, National Audubon Website, https://web4.audubon.org/bird/at_home/coffee/

Song Bird Coffee, American Birding Association, https://www.aba.org/shadecoffee/songbird.html

Some Coffee-related Resources, American Birding Association, https://www.aba.org/shadecoffee/whattodo.html#Coffee-related%20Resources

Why Migratory Birds are Crazy for Coffee, Migrants and Coffee: What’s the Connection?, National Zoo, Smithsonian Institution, https://nationalzoo.si.edu/scbi/MigratoryBirds/Fact_Sheets/default.cfm?fxsht=1

Why Migratory Birds Are Crazy for Coffee, Atlanta Audubon Society, formerly: https://atlantaaudubon.org/aaswww/sgc/sgcfacts.htm

Smithsonian-Certified Shade Grown & Bird Friendly Coffee, Caffe Ibis, https://caffeibis.com/

Crow vs. Raven

Common Raven (Corvus corax)
Bryce Canyon National Park
Courtesy US National Park Service
And found on Wikipedia

American Crow Juvenile & Parent
(Corvus brachythynchosby)
Copyright © 2011 Wayne Whaley

American Crow, Orem, UT
(Corvus brachythynchosby)
Copyright © 2011 Wayne Whaley

American Crow Pair, Orem, UT
(Corvus brachythynchosby)
Copyright © 2011 Wayne Whaley

Hi I’m Holly Strand.

As you might have guessed, the American crow and the common raven are birds of a feather—two closely related species of the same genus Corvus. Both of them are residents of Utah. Together with family members magpies and jays, crows and ravens are among the brainiest animals on the planet.

Many times I’ve heard someone ask “Is that a crow or a raven?” or “What’s the difference between them?”

Perhaps the easiest way to tell these two apart is by size. If you are thinking to yourself “Wow! That’s a huge crow!” You are probably looking at a raven. Ravens can weigh over 2.5 pounds while crows typically weigh less than 1. The Raven’s wingspan can clear 4.5 feet while that of crows is less than 3. Proportional to their bodies, the bill on a Raven is larger and thicker.
The crow has a thinner, more pointed bill.

Take a look at the tail in flight: a crow tail is fan shaped with a straight tail edge. A raven tail has a rounded wedge shape.

In the air, ravens usually soar, while crows will flap a lot more. It’s not always apparent why, but some ravens will perform acrobatic rolls during flight—usually half rolls, but sometimes full rolls and even double rolls!

Common ravens are abundant throughout Utah, They can be found in almost all habitats and in all seasons. They are more wilderness-oriented than crows who prefer forest edges, savannas, agricultural fields and urbanized areas. In cities and towns humans provide lots of easy food in the form of garbage. The crows’ intelligence allows them to take advantage of novel food items– like pizza and Cheetos–that don’t really resemble food in the wild.

Finally, listen to the difference in sound: Here are two crows calling—an adult and a juvenile https://xeno-canto.org/recording.php?XC=72977 . Now listen to the throatier sound of the raven https://www.xeno-canto.org/america/recording.php?XC=12581
Crows will also scream, rattle, whine and coo, but most of the time they just caw. Ravens have a richer, more complex vocabulary. They’ll scream, trill, knock, croak, cackle, warble, yell, and kaw. Young birds reared in isolation have even been taught to say “Nevermore.”

Thanks to Ryan O’Donnell and Andrew Spencer for their recordings available on the web at www.xeno-canto.org

For Wild About Utah, I’m Holly Strand.

Credits:

Photos: Courtesy US National Parks Service &
Courtesy & Copyright © 2011 Wayne Whaley
Text: Holly Strand

Sources & Additional Reading:

Boarman, William I. and Bernd Heinrich. 1999. Common Raven (Corvus corax), The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology; Retrieved from the Birds of North America Online: https://bna.birds.cornell.edu/bna/species/476

Kilham, Lawrence. 1989. The American crow and the common raven. W. L. Moody Jr. Natural History Series. College Station: Texas A&M University Press.

Marzluff, John M. 2005. In the company of crows and ravens. Yale University Press.

Savage, Candace Sherk , 1997. Bird brains: the intelligence of crows, ravens, magpies, and jays. Sierra Club Books.

Verbeek, N. A. and C. Caffrey. 2002. American Crow (Corvus brachyrhynchos), The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology; Retrieved from the Birds of North America Online: https://bna.birds.cornell.edu/bna/species/647

Fitting the bill

Fitting the bill

Fitting the bill: White-winged Crossbill, Courtesy and Copyright Paul Higgins, www.pbase.com/phiggins/
White-winged Crossbill
Copyright © 2009 Paul Higgins
More photos at pbase.com/phiggins/
and utahbirds.org Photo Gallery

Fitting the bill: Red Crossbill, Courtesy and Copyright Paul Higgins, www.pbase.com/phiggins/Red Crossbill (female)
Copyright © 2009 Paul Higgins
More photos at pbase.com/phiggins/

Few among us would choose to eat a steak with a spoon or soup with a fork. And in the world of birds, it’s the same story – you need the right tool for the right job – and you can tell a lot about a bird by paying attention to its beak.Fitting the bill

Physiologically, beaks are a specialized extension of the skull and are coated in keratin – the same material that makes up our fingernails. And like our fingernails, the cutting edges of the beak can be re-grown as they are worn down by use.

Birds use beaks for a multitude of tasks including preening, weaving nests, and defending territories. However it is the task of eating that seems to dictate beak shape and size. Envision the hummingbird, for instance. Its long, thin beak – and corresponding tongue – is designed to reach deep into flowers to collect the nectar within. A hummingbird beak would not work for a woodpecker or a great horned owl. Likewise an eagle’s beak needs to be sharp and strong for tearing flesh, and wouldn’t suit the lifestyle of an ibis or a sparrow.

One Utah native, the aptly-named red crossbill, has one of the most unique beaks around. When closed, its curved top and bottom bills overlap crossways in what looks like an awkward and uncomfortable pose.

French naturalist Count Buffon, first laid eyes on a crossbill in the mid-1700’s. The bird was collected in the Americas, then shipped abroad for examination. Without observing the crossbill in its natural habitat, Buffon labeled its beak “an error and defect of nature, and a useless deformity.” More than 50 years later, Scottish-American naturalist Alexander Wilson observed a crossbill in the wild and determined that its beak ‘deformity’ was in reality a magnificently adapted tool. The crossbill’s diet consists mainly of the seeds of conifer trees, and it turns out that the bird’s curiously crossed beak is perfectly adapted to prying apart the scales of pinecones to get at the seeds within.

Members of the finch family, these birds are often seen in flocks and occasionally visit backyard feeders. They are easily identified by their unique beaks, which serve as a reminder that the right tool for the right job can sometimes seem a bit unconventional.

For more information and photographs of crossbills, visit our website at www.wildaboututah.org. Thank you to Rocky Mountain Power Foundation for supporting the research and development of this Wild About Utah topic.

For the Stokes Nature Center and Wild About Utah, this is Andrea Liberatore.
Fitting the Bill-Credits:
Fitting the Bill
Photos: Courtesy & Copyright Paul Higgins(phiggins)www.pbase.com/phiggins
Text:    Andrea Liberatore, Stokes Nature Center, logannature.org

Fitting the Bill-Additional Reading:

Benkman, Craig W. 1987. Crossbill Foraging Behavior, Bill Structure, and Patterns of Food Profitability. The Wilson Bulletin 99(3) p. 351-368 https://www.uwyo.edu/benkman/pdfs%20of%20papers/benkman_1987_wilsonbull.pdf

Conniff, Richard. 2011. The Species Seekers: Heroes, Fools and the Mad Pursuit of Life on Earth. W.W. Norton & Company: NY https://www.amazon.com/Species-Seekers-Heroes-Fools-Pursuit/dp/0393341321

Pearson, T. Gilbert (ed.). 1936. Birds of America. Garden City Publishing Company, Inc. Garden City, NY https://www.amazon.com/T-Gilbert-Pearson/dp/1331531268/ref=pd_lpo_14_t_0/144-1525643-4789824

Fitting the bill
Fitting the bill
Fitting the bill

USA National Phenology Network

Courtesy USA National Phenology Network

The study of recurring plant and animal life cycle events is phenology. It is the calendar of nature. This includes when plants flower, when birds migrate and when crops mature. Phenology is relevant to interactions between organisms, seasonal timing and large-scale cycles of water and carbon. Phenology is important to us for many reasons. Farmers need to know when to plant and harvest crops and when to expect pests to emerge. Resource managers use it to monitor and predict drought and assess fire risk. Vacationers want to know when the best fall colors will be or when the wildflower blooms will peak. Timing varies but we can discern patterns.

The USA National Phenology Network monitors the influence of climate on the phenology of plants, animals and landscapes. They encourage people to observe phenological events such as flowering, migrations and egg laying. The Phenology Network provides a place to enter, store and share these observations, which are then compiled and analyzed nationwide. Participants range from individual observers in their own backyards to professional scientists monitoring long-term plots. My husband and I monitor leafing and flowering of lilacs, a key species in the program.

These observations support a wide range of decisions made routinely by citizens, managers, scientists and others. This includes decisions related to allergies, wildfires, pest control, and water management.

I urge you to participate. The National Phenology Network has many public, private and citizen partners. It is a great way to become involved in a nation-wide effort to better understand our environment. All this information and much more is available at the National Phenology website, to which there is a link from our Wild About Utah website.

This is Linda Kervin for Bridgerland Audubon Society.

Credits:

Text: Linda Kervin, Bridgerland Audubon Society
Additional Reading:

Linda Kervin’s pieces on Wild About Utah

Phenology Tools for Community Science
USA National Phenology Network, https://www.usanpn.org/
Nature’s Notebook Education Program, US National Phenology Network, https://www.usanpn.org/nn/education

North American Bird Phenology Program, USGS Patuxent Wildlife Research Center, https://www.pwrc.usgs.gov/bpp/BecomeAParticipant.cfm

eBird, https://www.ebird.org/

iNaturalist, https://www.inaturalist.org/