Wild Birds Unlimited Newsletter
~ For those passionate about birding and nature ~
July 2017                                                                                              Volume 7.17
Nature News

High Desert Bird of the Month
Bullock's Oriole


Common Name: Bullock's Oriole
Scientific name: Icterus bullockii
Northern Nevada plays host to a good variety of birds in winter - Northern Flicker, White-crowned Sparrow, Oregon Junco;  and summer is mostly devoid of any unusual, colorful birds.  But there is one summer resident that sets my heart singing - the Bullock's Oriole.  It's such a thrill to see the flash of orange and black in the trees, to hear their beautiful song, to get a glimpse of their amazing nests.
Bullock's Orioles winter in Mexico and nest all across the western half of the U.S.  They were once lumped with the eastern Baltimore Oriole; but now scientists believe they are not even closely related to that species. They are members of the same family as blackbirds, meadow larks and grackles.
Male Bullock's Orioles have a black crown and back, a black eyeline and chin.  The remainder of the body is orange-yellow to yellow.  The wings are black, edged in white with a large white patch.  The female and immature are mostly grayish brown to yellow.  The female may show some black on the throat and has pale white wingbars.
Preferred habitat for the oriole is riparian (along rivers, streams, lakes) where there is likely to be cottonwood and willow.  They can also be found in urban parks, especially near water or in suburban neighborhoods that have cottonwood trees. 
The Bullock's Oriole is one of the few songbird species in which the female also sings.  Her song varies somewhat from the male's.  She will sing up to and during nest building, and may actually sing more than the male. For a sampling of the oriole's song, visit www.allaboutbirds.org.
The female builds a hanging pouch-like nest, which is woven from hair, fibers, and grasses and lined with willow or cottonwood cotton, or feathers.  They will also use cotton from a nesting ball to line the nest.  The nest is usually placed very high in a deciduous tree - cottonwoods seem to be their preference.  As with most songbirds, incubation is about two weeks, and the young fledge in about fourteen days.  Both parents will feed the young for several weeks after they fledge.
The diet for both adults and young is almost exclusively insects.  However, the adults will come to a nectar feeder, using the same solution as for hummingbirds.  Feeders designed specifically for orioles often include a shallow dish for grape jelly and a place to attach orange halves.  Oriole feeders and nesting material balls can be purchased at Moana Nursery. 

For more information on Bullock's Orioles, visit one of the three Moana Nursery store locations:  1100 W. Moana Ln. & 11301 S. Virginia St., Reno and 7644 Pyramid Hwy., Sparks. 
Carmel Ruiz-Hilton is Manager of Wild Birds Unlimited Nature Shops at Moana Nursery in Reno/Sparks

Fun Facts About 

- Orioles are insect and fruit eaters. They usually stay hidden in the trees eating and singing their beautiful whistling notes. They can be drawn down from their perches with foods like orange slices, grape jelly, mealworms and nectar feeders.
- When not feeding on nectar, orioles seek out caterpillars, fruits, insects, and spiders.

- Bullock's Orioles may feed almost entirely on grasshoppers when they are plentiful; one bird was found to have feasted on 45 of them in one day.
- While in their tropical winter habitats, Baltimore and Bullock's Orioles feed on nectar from numerous flowering trees, which explains their attraction to nectar feeders upon their spring-time return to North America.
- While in their tropical winter habitat, the Baltimore and Bullock's Oriole play an important role in pollinating several tree species as they transfer pollen from tree to tree while eating nectar from their flowers.
- The Oriole nest is an engineering masterpiece. They weave a hanging-basket nest with plant fibers, grasses, vine and tree bark and sometimes string or yarn placed out on the small twigs of a branch 6-45 feet in the air. This keeps them safe from most predators.
- It takes as many as 12 days for an Oriole to weave its nest. One Baltimore Oriole was observed spending 40 hours building a nest with about 10,000 stitches and the tying of thousands of knots, all with its beak.
- The female Bullock's Oriole is the primary nest weaver, but she may get some help from her mate in both the weaving and collection of nest material. Only the female incubates and broods, while both feed the young.
- While modern day Oriole nests are made primarily of plant fibers, Oriole nests collected in the late 1800s, before the age of the automobile, were made almost exclusively of horsehair.
- Orioles will lay four to five eggs anywhere from April to June. The young will fledge as late as 30 days from egg laying.
- Orioles are found across North America in the summer. Some species winter in the tropics and others in Mexico.
- Most Baltimore Orioles spend their winters in southern Mexico, Central America and the tropics, but some will stay in the southern states of the U.S., with a few reports as far north as New England.
- Most Bullock's Orioles spend their winters in central and southern Mexico, with a few staying along the coast of southern California.
- Both the Bullock's and Baltimore Orioles start their southerly migration as early as July, with August being the prime migration month.
- Bullock's and Baltimore Orioles migrate at night and are known to be victims of collisions with buildings and communication towers
- The Bullock's Oriole was named in honor of William Bullock and his son, also named William, for their ornithological work in Mexico in the early 1800s.
- The Baltimore Oriole, found in the east, and the western Bullock's Oriole were once considered to be the same species under the name Northern Oriole. While they do inter-breed in areas where their ranges overlap, genetic studies have shown them to be two distinct species.
- Orioles are a member of Icteridae family, meaning that their closest bird relatives include meadowlarks, blackbirds, bobolinks and grackles.
- The oriole gets its name from the Latin aureolus, which means golden.
- In areas with high quality habitat, Orchard Orioles may nest in close proximity to each other; a single tree may even contain several nests.
- The Scott's Oriole, a summer resident of the Southwest U.S., weaves its nest out of fibers from yucca plant leaves.
- Orioles appear to be sensitive to the spraying of pesticides, with birds succumbing directly from the poison and from the loss of their insect food sources.
- The oldest banded Bullock's Oriole ever recaptured in the wild had lived 6 years and 1 month.

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Upcoming Events

Lahontan Audobon Society

Friday, July 14
 Field Trip - Thomas Creek Canyon
Friday, July 28
 Field Trip - Tahoe Meadows
Friday, August 11
 Field Trip - Rancho San Rafael
Tuesday, August 22
 Mountain Chickadees - Behavior, Cognition and the Brain - Program Meeting
Friday, August 25
 Field Trip - Mayberry/Dorostkar Parks

Animal Ark

July 1 - July 31
Animal Ark, 1265 Deerlodge Road 
Reno, NV 89508 
We offer free admission for all active and reserve personnel. Military family members will receive 50% regular admission prices. We're grateful for your service!

July 8 @ 6:00 pm - 8:30 pm
Animal Ark, 1265 Deerlodge Road 
Reno, NV 89508 
Join us for a howling good time! The park opens at 6:00 p.m. so you may see the other residents of Animal Ark prior to the fun and educational Wolf Howl Program at 7:00. Hear wolves and coyotes howl then participate in our contest, with prizes to be awarded to the best human howlers. Event prices: Adults $15; Seniors $13.50;...

July 29 @ 6:30 pm - 8:00 pm
Animal Ark, 1265 Deerlodge Road 
Reno, NV 89508
Reservations required due to limited seating. RSVP at 1-775-970-3431 or purchase on-line below. Celebrate Americas birthday month at Animal Ark and enjoy yourself with an incredible experience: Watch these magnificent cats running with extraordinary speed, off-leash, across the desert in pursuit of an enticing lure. Event prices: Adults $40; Seniors $35; Children (8-16 years old) $30. Children must be at...

Nature Happenings
NABA National Butterfly count.
* Delta Aquarids Meteor shower peaks in late-July.
* Garter snakes give birth to seven - 30 young during July or August.
* Except for goldfinches and late bluebirds, bird breeding and nesting season ends this month.
* Thistle plants begin to seed; goldfinches gather thistledown for nesting material.
* Mallards and wood ducks molt into "eclipse" plumage and are unable to fly for several weeks.
* Blackbirds begin to flock and appear at feeders.
* Second broods of squirrels are born.
* Fawns begin traveling with adult females.
* Butterfly milkweed in bloom. Look for Monarch Butterfly adults, eggs and larva.
* Keep your feeders and bird baths clean and your seed fresh.
* Final brood of hummingbirds begin to appear at feeders.
* Delta Aquarids Meteor shower peaks in late-July.

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Moana Nursery | 1100 W. Moana Lane | 11301 S. Virginia St. | 7655 Pyramid Hwy. | Reno/Sparks | NV | 89509