Tag: Oregon Vesper Sparrow

Vesper Sparrow Stephens flipped cropped (72dpi 11x17)

Coming this Field Season: Oregon Vesper Sparrow and Technology

Spring has sprung, and migratory birds are making their way back to the Klamath Siskiyou Bioregion. Klamath Bird Observatory (KBO) is preparing by dusting off field gear, mapping out survey sites, and hiring summer staff. Each staff member has their own favorite thing to look forward to this field season: starting a new project, expanding an active project, or wrapping up data collection.

Dr. Sarah Rockwell, one of KBO’s Research Biologists, is excited to be expanding the Oregon Vesper Sparrow GPS tracking project. KBO will be deploying more tags at our Lily Glen study site near Howard Prairie. Sarah will also be training partner Bob Altman with the American Bird Conservancy to expand the study and place GPS tags on Oregon Vesper Sparrows in the Willamette Valley this summer. KBO will look at the Willamette birds’ migratory routes and overwintering areas, and compare them to the data KBO has gathered from birds in the Rogue Basin.

Oregon Vesper Sparrow (c) Frank Lospalluto

This summer KBO will also continue to deploy MOTUS tags on late-stage Oregon Vesper Sparrow nestlings. In previous years, very few juveniles have returned to the same meadow where they were hatched. To investigate this, Sarah will be putting MOTUS nodes out in new meadows surrounding past sites, expanding her search for these birds.

Oregon Vesper Sparrow Nest

Sarah is wrapping up collecting resight data for the Oregon Vesper Sparrow this summer – by resighting individually color-banded birds year after year, she can analyze their annual survival. KBO has also studied the sparrows’ nest success and habitat preferences in past years. The vegetation characteristics of sites where the sparrows choose to place their nests could be used to encourage land managers to plant beneficial vegetation. Other partners are collecting parallel data in the Willamette Valley, OR, and Puget Lowlands, WA, for similar use. The Oregon Vesper Sparrow is under review to potentially be added to the federally threatened and endangered species list, and Sarah hopes these data will help contribute to a decision.

This summer Science Director Jaime Stephens is excited about the ongoing Oregon Vesper Sparrow project. “KBO has been focusing our field research on this species for nearly a decade. A challenging part of science is that it can take a long time to gather the necessary data. In the next two years, KBO expects to have results available from this project that could be very impactful. These include nest success and breeding season habitat relationships, and as that wraps up we are moving on to MOTUS and GPS tagging to study non-breeding season movements. We are finishing an exciting part and moving on to an even more exciting part of the project.”

To learn more about the Oregon Vesper Sparrow and KBO’s conservation science projects click here. “Coming this Field Season” is a blog series highlighting the different projects that KBO staff are working on this summer. Subscribe to the blog and follow us on Facebook and Instagram to be notified of the next article.

Educational Videos from Vesper Meadow

Oregon Vesper Sparrow (c) Frank Lospalluto

Klamath Bird Observatory has been working with Vesper Meadow to engage and educate the community on the Oregon Vesper Sparrow. Vesper Meadow is a former agricultural pasture that is being reclaimed by a community-powered restoration effort. They developed two educational videos on the work that is being done to help this imperiled species by KBO and other partners. Click here to learn more about KBO’s work on the Oregon Vesper Sparrow.

Learn how scientists are monitoring the Oregon Vesper Sparrow, an imperiled species estimated to be down to around 2,000 individuals. See how nests are found, how fledglings are monitored, and how annual survival is observed using Oregon’s first MOTUS network, currently in place at Vesper Meadow. See how the ongoing data collection and partnerships with scientists with the Klamath Bird Observatory help inform our restoration efforts to help save this species from extinction. Support for this video comes from the Oregon Birding Association.

Research to Save the Imperiled Oregon Vesper Sparrow


 

Photo (c) Vesper Meadow

Learn how native plants provide prime nesting habitat for the Oregon Vesper Sparrow, an imperiled species whose population is down to around 2,000 individuals and includes over 80 nesting pairs found so far at Vesper Meadow. See how volunteers engage in converting areas of Vesper Meadow from invasive to native plants in an attempt to provide more nesting habitat and food for this namesake species. Hear from our partners in restoration at The Understory Initiative who are helping to monitor how creek restoration efforts affect water flows and plant populations where Oregon Vesper Sparrows build nests and raise their young.

Habitat Restoration for the Imperiled Oregon Vesper Sparrow 

 

 

 

Using Motus Technology to Inform Conservation of the Oregon Vesper Sparrow

 

Handheld radio telemetry antenna detects tagged birds away from the main Motus station.

Fall 2020 saw the installation of the very first Motus station in Oregon at the Vesper Meadow Restoration Preserve in partnership with the Vesper Meadow Education Program. The Motus Wildlife Tracking System is a collaborative research network using automated radio telemetry stations to study the movements of small organisms. Tags are small enough to be carried by birds, bats, and even bees. Motus tags emit a radio frequency that can be detected by a nearby Motus station anywhere in the world, and the number of stations is quickly growing.

Motus LifeTag

We are using Motus technology to enhance our ability to track movements of the at-risk Oregon Vesper Sparrow. In 2021, we searched for nests of this ground-dwelling bird at Vesper Meadow, and placed Motus- compatible LifeTags on 12 Oregon Vesper Sparrow nestlings that were nearly ready to fledge. LifeTags are solar-powered and emit a signal every few minutes during daylight hours for the lifetime of the bird. The automated “resighting” and location estimation from this new technology will help us study habitat use, movements, and survival of young birds during the post‐fledging period when they are particularly vulnerable, and explore dispersal of birds returning to nearby meadows next spring. We also set up an array of 18 Motus nodes around the edge of Vesper Meadow to supplement our main Motus station there. Four of the nodes formed a mini-grid around two of the nests with tagged nestlings, and this will serve to pilot the use of this technology to track precise fledgling locations and habitat use. We collected tens of thousands of detections of our tagged fledglings from the node network over the months of June-October – and likely a lot of radio frequency “noise” from other stray signals – and we look forward to sorting through and analyzing those data this winter.

Adult Oregon Vesper Sparrow at the Lily Glen field site. (c) Frank Lospalluto

The Oregon Vesper Sparrow is a subspecies of conservation concern, and it has been petitioned for listing under the Endangered Species Act due to its low population size and declining trend. We have noted low rates of fledged young returning to our field sites at Lily Glen and Vesper Meadow for their first spring as breeding adults. Motus technology will help us determine the cause – are young birds having trouble surviving the vulnerable post-fledging stage, or their risky first round-trip migration and winter? Or are they simply moving away from the meadows where they were born and choosing other nearby meadows to try raising their own young? A handheld radio telemetry antenna will allow us to more easily locate any tagged birds that disperse away from our main field sites to other nearby meadows next spring.

In addition to enhancing our Vesper Sparrow research, the Motus station at Vesper Meadow has detected two Lewis’s Woodpeckers migrating from MPG Ranch lands in Montana, one Swainson’s Thrush that was banded in interior British Columbia, and a Western Sandpiper and Semipalmated Plover from coastal British Columbia – so the station is assisting other researchers with their migration tracking projects as well! Our Motus station, node network, and tagging effort were made possible by the USFWS, MPG Ranch, Oregon Wildlife Foundation, and private donations.

Click here to learn more about our work with the Oregon Vesper Sparrow.

Expanding Research with Cutting-Edge Technology

 

Oregon Vesper Sparrow (c) Frank Lospalluto

In 2020, we expanded the project with the deployment of archival GPS nanotags to track non-breeding season movements of Oregon Vesper Sparrows breeding in the Rogue Basin. We successfully captured 10 males at our Howard Prairie study site and placed GPS backpacks on them using a leg-loop harness.

Since the GPS tags are very small, and the batteries are not powerful enough to transmit data, tagged birds need to be recaptured the following year to retrieve the stored data. In 2021, we located and recaptured four of these GPS backpack-wearing males! Three of them had fully functioning tags with fall migration and/or wintering locations recorded, and we look forward to sharing these exciting new results soon. This subspecies has never been tracked year-round before, and our work will uncover important information about the migratory routes and overwintering areas used by this imperiled subspecies. This will help answer a question critical for future conservation efforts – what challenges might these birds be facing during migration and winter?

To read more about this effort and see photos, check out the Klamath Call Note blog. Our GPS research was made possible with funding from the Carpenter Foundation and Oregon Wildlife Foundation.

Vesper Meadow Motus Antennae (c) Klamath Bird Observatory
Vesper Meadow Motus Computer (c) Klamath Bird Observatory

2020 also saw the installation of the very first Motus station in Oregon at the Vesper Meadow Restoration Preserve, supported by Montana’s MPG Ranch. The Motus Wildlife Tracking System is a collaborative research network using automated radio-telemetry arrays to study the movements of small organisms. Tags are small enough to be carried by birds, bats, and even bees. Motus tags emit a radio frequency that can be detected by a nearby Motus station anywhere in the world. Future research plans include tracking local Oregon Vesper Sparrow movements using Motus technology at this site, and migratory movements as the western Motus network develops. Further, our Motus station will provide location data for other research projects, recording any tagged organism that passes by on its own migratory journey. The east coast has a well-established Motus network that has led to exciting new discoveries in animal migration. We are excited to be on the forefront of developing a Motus network in the western U.S.

In 2021, we searched for nests of this ground-dwelling bird at Vesper Meadow, and placed Motus-compatible LifeTags on 12 Oregon Vesper Sparrow nestlings that were nearly ready to fledge. LifeTags are solar-powered and emit a signal every few minutes during daylight hours for the lifetime of the bird.

The automated “resighting” and location estimation from this new technology will help us study habitat use, movements, and survival of young birds during the vulnerable post‐fledging period, and explore dispersal of returning birds to nearby meadows next spring. We set up an array of 18 Motus nodes around the edge of Vesper Meadow to supplement our main Motus station there. Four of the nodes formed a mini-grid around two of the nests with tagged nestlings, and this will serve to pilot the use of this technology to track precise fledgling locations. We collected tens of thousands of detections of our tagged fledglings from the node network over the months of June – October, and we will analyze those data this winter. A handheld telemetry unit will allow us to more easily find any tagged birds that disperse to other nearby meadows next spring. In addition to enhancing our Vesper Sparrow research, the Motus station at Vesper Meadow has detected two Lewis’s Woodpeckers migrating from MPG Ranch lands in Montana, one Swainson’s Thrush that was banded in British Columbia, and one Western Sandpiper and Semipalmated Plover also from British Columbia – so the station is assisting other researchers with their migration tracking projects as well! Our Motus station, node network, and tagging effort were made possible by MPG Ranch, USFWS, Oregon Wildlife Foundation, and private donations.

Motus LifeTag
KBO Volunteer with CTT Handheld (c) Kevin Spencer

Vesper Sparrow Film site is now live!

We have some exciting updates to share with you all here at Klamath Bird Observatory. The Oregon Vesper Sparrow research we have been working so hard on is being turned into a short-film documentary! Local photographer and videographer Daniel Thiede has spent countless hours in the field with us this past year to help document our research efforts. We are thrilled to announce the Vesper Sparrow Film site is now live! Click on the link below to view the trailer for the film and to donate to the Oregon Vesper Sparrow research and documentary. We have a lot of work ahead of us, and need your support!

CLICK HERE to visit the Vesper Sparrow Film website.  

The Oregon Vesper Sparrow Pooecetes gramineus affinis can be found west of the Cascade Mountains. This subspecies has been petitioned for listing under the Endangered Species Act because of its small population size and declining trend. Breeding Bird Surveys indicate a statistically significant declining population trend of ~5% per year. The 2010 estimated range-wide population size was <3,000 birds, and more recent information suggests that number is closer to 2,000 birds.

Understanding the causes of population decline is critical to informing conservation action. A group of collaborators are contributing to a three year range-wide study to assess limiting factors. The study will assess whether birds are successfully producing young, surviving the winter, and dispersing to nearby habitat to identify where within the annual life cycle conservation actions are needed.

With the Oregon Vesper Sparrow currently under a 12-month review to determine whether listing under the Endangered Species Act is warranted, it is critical to understand subspecies variation for this species. Improved understanding of variation in morphology and vocalizations of the Oregon Vesper Sparrow subspecies, compared with other Vesper Sparrow subspecies, may have major conservation implications.

KBO, along with project partners in the Puget Lowlands in Washington (Center for Natural Lands Management), as well as the Willamette Valley (American Bird Conservancy), and a graduate student from Southern Oregon University, have been in the field collecting data to help us understand what makes this subspecies unique. Next year our efforts will continue, and our work on subspecies variation will be expanded to include the Great Basin Vesper Sparrow populations P.g. confinis in eastern Oregon.

Please continue to tune in to KBO and the Vesper Sparrow Film websites to receive updates on this important work.

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