Ring-Necked Pheasant

Native distribution the Common Pheasant in Eurasia, Courtesy Wikimedia, licensed under GNU Free Documentation LIcense v1.2 https://en.wikipedia.org/wiki/en:GNU_Free_Documentation_License
Native distribution of the
Common Pheasant in Eurasia
Courtesy Wikimedia
Licensed Under CCL Attribution Share-Alike 3.0 Ported
 
wikipedia.noon.Pheasant.250x164.jpgMale Ring-Necked Pheasant
Courtesy Wikimedia
Gary Noon, Photographer
Licensed Under CCL Attribution Share-Alike 2.0 Ported
 
wikimedia.Manske.Ringnecked_pheasant_flying_USFWS.250x189.jpgMale Ring-Necked Pheasant in flight
Courtesy US FWS & Wikimedia
Magnus Manske, Photographer
 
wikimedia.Male_and_female_pheasant.250x188.jpgMale(R) and Female(F)
Ring Necked Pheasant
Courtesy Wikimedia, Chris O, Photographer
Licensed Under CCL Attribution Share-Alike 3.0 Ported
 

Hi I’m Holly Strand from the Quinney College of Natural Resources at Utah State University.

It’s spring, and the birds are starting to make quite a racket outside. Here’s a bird we hear every day now, in the morning or at dusk: [https://www.xeno-canto.org/explore?query=common+pheasant]
That’s the sound of a male ring-necked pheasant crowing and then beating his wings against his body. The male is announcing his territory which may be 7 acres or more. Under the right conditions his announcement can carry up to a mile. Looking out the window, I often see our resident pheasant marching around the yard, sometimes herding a female or two, or three. For the dominant males keep female harems during the mating season.

Last year another male wandered up our driveway. This led to a skirmish. The two males held their heads low, rumps raised and tails straight out behind. They pecked and said some choice words to each other in pheasant language. Periodically they burst into a fluttering fight that involved some vicious biting, and kicking. Eventually the intruder left leaving the other to resume his post as head pheasant of our yard.

If you haven’t ever seen a ring-necked pheasant you are in for a treat when you do. The males have a green iridescent head, a bright red face, and a distinctive white ring collar. Their spectacular multicolored plumage ends in a long coppery tail cropped with thin black bars. The females are much smaller; their feathers a mottled mixture of brown and buff with dark markings. While not so beautiful, they are much harder to see and therefore are safer from predators.

All pheasants are natives of the Old World–more specifically of southern Asia. The ring-necked pheasant is not a distinct species there. It’s an informal name that refers to certain subspecies of the Common Pheasant, which occupies a huge territory stretching from the Black Sea and Caucasus region through Central and Middle Asia all the way through China Korea and the Russian Far East. Throughout this enormous territory, over 34 different subspecies of common pheasant have evolved– some with a ringed marking around their necks and some without. What we have here in America is a hybrid mix of a few of these ring-necked subspecies—mostly from China.

Because of their huge popularity as a game bird, ring-necked pheasants have been transplanted all over the world. In the U.S. the pheasant was introduced on the west coast in the 1860’s , but now you can find them in all but the most southern states. They are especially concentrated in our central Corn Belt region.

The ring-necked pheasant was first introduced to Utah around 1890. Their numbers are maintained through transplanting, natural dispersion and further releases of game-farmed birds. Some of those birds end up on the dinner table and some of them find refuge on private lands and in Utah neighborhoods like ours.

Thanks to Paul Marvin for his Xeno-Canto recording.

For sources, pictures and more information, go to www.wildaboututah.org.

For Wild About Utah, I’m Holly Strand.

Credits:

Images:

  1. Native distribution the Common Pheasant in Eurasia
    https://commons.wikimedia.org/wiki/File:Phasianus_colchicus_distribution.png
  2. Male Ring-Necked Pheasant https://commons.wikimedia.org/wiki/File:Pheasant.jpg
  3. Male Ring-Necked Pheasant in flight https://commons.wikimedia.org/wiki/File:Ringnecked_pheasant_flying_USFWS.jpg
  4. Male and female Ring-Necked Pheasant https://commons.wikimedia.org/wiki/File:Male_and_female_pheasant.jpg licensed under Creative Commons Attribution 3.0 License.

Text: Holly Strand

Sources & Additional Reading

Giudice, John H. and John T. Ratti. 2001. Ring-necked Pheasant (Phasianus colchicus), 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/572

Heinz, Gary H. and Leslie W. Gysel. 1970. Vocalization Behavior Of The Ring-Necked Pheasant. The Auk, 87: 279-295. https://sora.unm.edu/sites/default/files/journals/auk/v087n02/p0279-p0295.pdf

Johnsgard, P. A. 1999. The pheasants of the world. 2nd ed. Smithson. Inst. Press, Washington, D.C.
All About Birds: Ring-Necked Pheasant https://www.allaboutbirds.org/guide/ring-necked_pheasant/id

Audio:

Paul Marvin, XC163168. Accessible at www.xeno-canto.org/163168. License: Creative Commons Attribution-NonCommercial-ShareAlike 3.0
Date 2011-06-04
Location National Bison Range, Dixon, Montana

 

Birds and West Nile Virus

Birds and West Nile Virus: Bald Eagle, Haliaeetus leucocephalus
Bald Eagle
Haliaeetus leucocephalus
Courtesy US FWS
It’s that time of year again when we encounter a barrage of public health messages alerting us to take precautions during cold and flu season. However, a different disease outbreak has been making headlines this winter in Utah: West Nile virus.

Though West Nile virus is not a new name to most of us, our familiarity with it typically comes from summer time outbreaks amongst human populations. Yet this particular flare up has gained attention for causing the deaths of over 50 Bald Eagles and it happened during winter.

West Nile virus is maintained in nature by a transmission cycle between mosquitoes and birds. In this cycle, birds simply act as pathogen reservoirs, while the mosquitoes act as pathogen vectors passing the virus on to their eggs and infecting humans and animals through bites. Historically, in the locations of its origin – Africa, Europe, Asia, and the Middle East – this pathogen is rarely fatal to its avian hosts. In fact, antibodies to West Nile virus have been found in the blood of birds native to this region.

It wasn’t until 1997, when a stronger strain of West Nile virus emerged and caused fatalities in a wide range of avian species, that the infection started to be considered pathogenic to birds. When the disease first reached the United States in 1999 it proved to be highly virulent in North American bird populations. The American crow was particularly susceptible. Within 4 months of detection in New York, nearly 5,500 crows died from the infection. Since this first outbreak, West Nile virus spread across the United States and has been isolated in over 250 species of birds, including Bald Eagles.

While wintertime infection amongst human populations is rare, infection during this season is not so uncommon for birds. This is because birds can contract the disease by a variety of routes other than mosquito bites and direct contact. This is especially the case amongst opportunistic scavengers like raptors. If a raptor consumes the carcass of a bird killed by West Nile virus it can contract the virus orally, as the Bald Eagles did after consuming the remains of infected Eared Grebes. Luckily, while bird-to-bird transmission does occur amongst birds that exhibit roosting and group behaviors, the likelihood of a Bald Eagle, which is typically a solitary bird, directly passing the disease to another Bald Eagle is quite low. Meaning that once the last of the infected food source is gone, hopefully no further infections will occur.

For Wild About Utah, I’m Anna Bengtson.

Credits:
Image: Courtesy US FWS
Text: Anna Bengston

Sources & Additional Reading:

World Health Organization. West Nile Virus https://www.who.int/mediacentre/factsheets/fs354/en/
Utah DWR. Wildlife News: DWR Learns What Killed Bald Eagles https://wildlife.utah.gov/wildlife-news/1330-utah-dwr-learns-what-killed-bald-eagles.html

Koenig, W.D., Hochachka, W. M., Zuckerberg, B., and Dickinson, J.L. 2010. Ecological Determinants of American Crow Mortality Due to West Nile Virus During its North American Sweep. Oecologia, 163: 903-909. https://www.nbb.cornell.edu/wkoenig/K156TA_10.pdf

Powell, H. 2010. Counting Crows. BirdScope: Autumn 2010. https://www.allaboutbirds.org/Page.aspx?pid=1956

Rappole, J.H., Derrickson, S.R., and Hubálek, Z. 2000. Perspectives: Migratory Birds and Spread of West Nile Virus in the Western Hemisphere. Emerging Infectious Diseases, Vol. 6, No. 4, July-August 2000, pp. 319-328. https://wwwnc.cdc.gov/eid/article/6/4/pdfs/00-0401.pdf

Reisen, William K. 2013. Ecology of West Nile Virus in North America. Viruses, Vol. 5, Issue 9, pp. 2079-2105. https://www.mdpi.com/1999-4915/5/9/2079

Robins in Winter

American Robin
American Robin
Turdus migratorius
Courtesy US FWS, images.fws.gov
Dr. Thomas G. Barnes, Photographer
 

Robin with Chicks in NestAmerican Robin
Turdus migratorius
Courtesy US FWS, images.fws.gov
Lee Karney, Photographer
 

Robin with Chicks in NestRobin with Chicks in Nest
Courtesy US FWS, images.fws.gov
James C. Leopold, Photographer

The American robin with its abundance, red breast, and loud song is one of the most recognizable backyard birds in North America. For many of us the robin – or Turdus migratorius – is also thought of as a herald of spring. So why is it that we still occasionally see them in our wintry Utah backyards?

Seasonal bird migration can be triggered by a number of things, but the two main drivers are food supply and nesting habitat. In spring and summer the birds move northward to take advantage of insect hatches, budding plants, and the plethora of nesting sites. Then, as food sources dwindle in fall, the birds move southward to areas where the necessary resources are still plentiful.

The distances birds migrate in order to access these resources can range widely. Therefore, birds are generally categorized as being short-, medium-, or long-distance migrants. Robins are considered short-distance migrants. While their range spans all of Canada and the United States extending down into Mexico, most robins do not travel far from their breeding grounds in winter and may not leave at all. Only the populations that breed and reside on the edges of this range will migrate seasonally.

The robin’s varied diet and behavioral adaptability are the primary reasons these short-migratory or non-migratory patterns are possible. Robins are preferably ground foragers, feasting on insects and earthworms in the spring and summer months. Yet, during the fall and winter, robins eat a fruit-based diet. They track this seasonal food source in flocks, abandoning their summer individualistic and territorial behavior. These flocks – or roosting aggregates – also help them survive the cold winter temperatures. As a result, robins are able to cope with the ground freezing, the disappearance of their preferred food source, and the harsh winter weather.

Returning to our original question: is the American robin truly a sign of spring here in Utah? Is it strange to see this bird in our backyards during the winter months? The simple answer is no. Robins can be found year round almost anywhere south of Canada. While they may migrate nomadically, staying or leaving areas as weather and snow cover affect their food supply, there could be some keeping us company in Utah all winter.

For Wild About Utah, I’m Anna Bengtson.

Credits:
Image: Courtesy US FWS, Lee Karney, James C. Leopold, Photographers
Text: Anna Bengston

Sources & Additional Reading:

American Robin Profile, Utah Birds https://utahbirds.org/birdsofutah/BirdIndex.htm

American Robin, Cornell Lab of Ornithology https://www.allaboutbirds.org/guide/american_robin/id

American Robin, The Birds of North America Online https://bna.birds.cornell.edu/bna/species/462/articles/introduction

Studying Migration, Cornell Lab of Ornithology https://www.birds.cornell.edu/AllAboutBirds/studying/migration/

Migration Patterns, Cornell Lab of Ornithology https://www.birds.cornell.edu/AllAboutBirds/studying/migration/patterns

Where Have all the Robins Gone?, Migration, Cornell Lab of Ornithology https://www.birds.cornell.edu/AllAboutBirds/faq/master_folder/migration/document_view

Snow Depth Survey, The Great Backyard Bird Count https://www.birdsource.org/gbbc/science-stories/past-stories/snow-depth-survey

Winter Robins, The Great Backyard Bird Count https://www.birdsource.org/gbbc/science-stories/past-stories/is-that-winter-flock-of-robins-in-your-yard-unusual

Kelly, Patrick, A Moral Dilemma, Wild About Utah, June 29, 2020, https://wildaboututah.org/a-moral-dilemma/

Bengston, Anna, Robins in Winter, Wild About Utah, February 2, 2015, https://wildaboututah.org/robins-in-winter/

Bengston, Anna, American Robin, Wild About Utah, January 18, 2016, https://wildaboututah.org/american-robin-160118/

Bingham, Lyle, Richard Hurren(voice), The Occupants on Robin Street, Wild About Utah, July 8, 2008, https://wildaboututah.org/the-occupants-on-robin-street/

Golden Eagles

Golden Eagle
Golden Eagle
Aquila chrysaetos
Courtesy USDA Forest Service
Dave Herr, Photographer

On a recent Christmas Bird Count, my team witnessed an amazing feat of flight. We parked in a subdivision cul-de-sac to walk into the sagebrush foothills. Overhead we saw two Golden Eagles meet in a talon lock and tumble towards earth. They disengaged moments before crashing and flew off in opposite directions. A minute later and we would have missed it all. So what were they up to? I am not quite sure.

Golden Eagles are supreme flyers. In both courtship and territory displays they steeply dive and swoop upward. During a pendulum display, they dive and rise in one direction then turn and retrace their path. Pairs often play with an object in the sky, repeatedly dropping and retrieving it. The talon lock display is rarely seen, but it too is used both for bonding between pairs and in territorial disputes. We saw the display in December and the birds separated immediately, so we probably witnessed a territorial defense. Golden Eagles require a territory anywhere from 20 to 200 square miles depending on prey abundance. As with most wildlife, loss of habitat is a prime threat.

Three quarters of recorded Golden Eagle deaths can be traced to humans. In treeless areas, power poles provide a convenient perch. When their 7 foot wingspan touches two wires, they are electrocuted. New designs and retrofits for power poles eliminate this problem and the resulting range fires, but many of the older designs remain. Wind farms also kill eagles, but again, new designs and more careful siting are helping to alleviate this problem.

The Golden Eagles’ favorite meal in the West is jackrabbit. However, they are opportunistic foragers and will dine on carrion. If the carcass they feed on was shot, they may ingest fragments of bullets or buckshot that contain lead. Lead poisoning is an excruciating way to die. Carcasses with lead fragments are eaten by many carnivorous birds and mammals who are then poisoned. This winter, 8 Bald Eagles died of lead poisoning at the Wildlife Rehabilitation Center of Northern Utah. We must remedy this problem so we can insure that our skies will always be graced by the grandeur of soaring eagles.

Our theme music was written by Don Anderson and is performed by Leaping Lulu.

This is Linda Kervin for Bridgerland Audubon Society.

Credits:

Image: Courtesy USDA Forest Service, Dave Herr, Photographer
Theme: Courtesy & Copyright Don Anderson as performed by Leaping Lulu
Text & Voice: Linda Kervin, Bridgerland Audubon Society

Additional Reading:

Linda Kervin’s pieces on Wild About Utah

https://www.allaboutbirds.org/guide/golden_eagle/lifehistory

https://www.hawkwatch.org/component/content/127

https://www.peregrinefund.org/explore-raptors-species/Golden_Eagle#sthash.Gqowt1G0.gFqVfifi.dpbs

https://www.deseretnews.com/article/865596763/Lead-blamed-for-latest-bald-eagle-deaths-in-Utah.html