DNR-Led Study Tracks Rare Sparrow To Help Save Them

Tuesday, June 27, 2017

By June, saltmarsh sparrows are gone from Georgia’s coast, flying from the southern rivers of grass where they winter to marshes from Virginia to Maine where they nest. 

Although gone, however, they are not forgotten: They are followed. 

Thanks to a tracking project by the Georgia Department of Natural Resources and U.S. Fish and Wildlife Service, this spring’s migration could help pinpoint where saltmarsh sparrows from Georgia breed. Such connections are considered vital to conserving a species that otherwise could go extinct in 50 years. 

The problem is that the tidal marshlands that give these birds life and name are being squeezed by coastal development and sea-level rise, said DNR wildlife biologist Tim Keyes. “Their nest numbers are dropping and habitat is being lost. Marsh migration is not occurring at a rate to replace habitat loss.” 

The estimated number of saltmarsh sparrows has shrunk from 250,000 to 53,000 since the start of the century. Their secretive nature – living in marsh grasses, seldom singing – helped mask the decline.

Yet the advent of mini-transmitters light enough for animals that weigh only about a half-ounce has opened a window into the lives of these and other species. In March, Mr. Keyes and Adam Smith of the U.S. Fish and Wildlife Service led volunteers in netting and attaching “nano-tags” to 25 saltmarsh sparrows near the Jekyll Island causeway and on a marsh island off Little Cumberland Island. 

As part of work funded by a National Fish and Wildlife Foundation grant, antennas have been erected at Brunswick and on Ossabaw Island. A third is planned on St. Simons Island. Each registers signals from tagged birds that pass within about 15 miles, Georgia’s entry into a hemispheric wildlife tracking system called Motus. As of June 1, Georgia towers had picked up 11 of the saltmarsh sparrows tagged here. As they fly farther north, a Motus network more developed in the upper Eastern Seaboard will track them. Project leaders expect that data to begin trickling in soon. The transmitter batteries last 70-80 days. 

Mr. Smith, a quantitative ecologist with the Fish and Wildlife Service, explained that recent research using Motus to study the spring migration of thrushes demonstrates the important role that a single stopover site can have on the speed and likely the success of migration. 

“This effect may be even more prominent with a habitat specialist like the saltmarsh sparrow,” he said. “Thus, knowing where these birds are stopping to rest and refuel during migration, and how quickly they move after those stops, is crucial information to managers as the sparrows’ habitat continues to shrink.” 

According to Mr. Keyes, who works with DNR’s Nongame Conservation Section, researchers studying migration previously had to rely on recapturing banded birds at different sites. It was a long-shot process: Of 184 saltmarsh sparrows banded in Georgia, “we had a grand total of one recapture,” Mr. Keyes said. 

“This will be a much more efficient way to see where individuals that winter here are actually going.” 

The Nongame Conservation Section works to conserve Georgia’s endangered and other wildlife not legally fished for or hunted, such as saltmarsh sparrows, as well as rare plants and natural habitats. The agency depends primarily on fundraisers, grants and contributions for this vital work. 

Public support is vital. Georgians can provide help conserve nongame by:
Buying or renewing a DNR eagle or hummingbird license plate. Most money from sales and renewals is dedicated to nongame conservation. Upgrade to a “wild” tag for $25.
Donating directly to the agency (details at www.georgiawildlife.com/conservation/support).
Learning more about this work, www.georgiawildlife.com/conservation/annualreport

FIELD NOTES
Saltmarsh sparrows nest in marsh grass near the high-tide mark, timing egg-laying to hopefully allow young to fledge before peak tides flood a nest. And while extreme tides destroy many nests, females will return to incubate eggs in flooded nests after tides recede, as detailed in the Saltmarsh Habitat & Avian Research Program article and video at http://bit.ly/2sN8H6q

Georgia’s Motus towers are picking up birds tagged in other projects, such as Kirtland’s warbler, black-crowned heron, piping plover and Swainson’s warbler (the latter included four birds tagged in Jamaica in April and picked up in Georgia in May). Motus is Latin for “movement.” 

Motus tracking (www.motus.org) of tagged saltmarsh sparrows migrating south in 2015 is illustrated at www.motus.org/data/demo/saltmarshSparrows2015.html

The netting along Jekyll causeway and U.S. 17 in March did land a saltmarsh sparrow PIT-tagged in Maine in 2015, where it nested. Project leaders hope to trace her return north by nano-tag.
 



Tennessee Fish And Wildlife Commission's 1st 2018 Meeting To Be Held In Nashville

The Tennessee Fish and Wildlife Commission will hold its first meeting of 2018 on Jan. 18-19 (Thursday-Friday) at the Tennessee Wildlife Resources Agency’s Ray Bell Region II Building.   Committee meetings begin at 1 p.m., Jan. 18. The formal commission meeting starts the following day at 9 a.m. TWRA Waterfowl Program Coordinator Jamie Feddersen will preview the waterfowl ... (click for more)

TWRA Requesting Public Input For 2018-19 Hunting Regulations

The Tennessee Wildlife Resources Agency is soliciting comments for its 2018-19 hunting seasons’ regulations. This is an opportunity for the public to provide ideas and share concerns about hunting regulations with TWRA staff. The comment period will be open through Thursday, Feb. 15, 2018. Public comments will be considered by TWRA staff and may be presented as proposals for ... (click for more)

City Council Considering New 2-Year $600,000 Contract With Father To The Fatherless

The City Council is considering whether to approve a new two-year contract of up to $600,000 with Father to the Fatherless for the Violence Reduction Initiative. Council members had a number of questions during a lengthy hearing on Tuesday afternoon, but Police Chief David Roddy said the program has helped bring a 35 percent reduction in gun-related shootings and a 16 percent ... (click for more)

168 In Homeless Cold Weather Shelters

The Salvation Army is at capacity with its cold weather shelter at 60 and the Community Kitchen has 108 so far in the cold weather shelter, officials said Tuesday night.  Kimberly George said, "This is the most the two of us have had so far." She added, "More are at the Chattanooga Rescue Mission too."  Lows are not set to reach above freezing in Chattanooga ... (click for more)

Thank You, Dr. Martin Luther King, Jr.

Thank you, Dr. King for stepping-out.  Thank you for your lasting voice to what it's all about. Thank you, Dr. King for  stepping up and also showing-up, ...when decisions were being made and  your refusal  to shut-up.  We find your fingerprints on both directions and toward progress.  your modeling, mentoring,  and reactions helps ... (click for more)

Roy Exum: Once In A Blue…

On August 21st this past summer, four black women were walking down the street in Dayton, Tn., when a white man asked from his porch, “Are you ladies here to see the eclipse?” Told that yes, they most certainly were, the gentleman pointed to his back deck and another white couple and said, “If you don’t have plans, would you care to sit with us?” The ladies were delighted and ... (click for more)