Fly 6,000 miles with talking backpacks? No problem.
During an August 10th Hilo visit, Hawaii Audubon board members Dr. Wendy Kuntz and Susan Scott, (me, in photo) admire this school’s welcome sign for its mascot, the Kōlea. ©Wendy Kuntz
December 12, 2022
Does a GPS signal interfere with a Kōlea’s migration? That was the question Wally Johnson set out to answer in March when he and a team of researchers and volunteers tagged 30 Kōlea at Punchbowl Cemetery (March 30 NEWS.) All 30 birds were fitted with colored leg bands for identification. In addition, 10 birds carried live GPS backpack devices, and 10 carried dummy backpacks. Ten had no backpacks at all.
This bird carried, round trip, a GPS tag labeled DUMMY. It was the same weight and size as the live tags, but did not transmit a signal. ©Susan Scott
By the end of April-early May, all 30 birds had migrated. Then came the waiting, and the nut of the investigation: Which of the study birds would return to Punchbowl?
Hawaii Audubon volunteers answered the call to find out. Armed with cameras and binoculars, Kōlea watchers took turns driving through Punchbowl almost daily from mid-July through September to look for, and record, the study-birds that had made the round trip.
The result gave Wally photographic evidence to the question of whether GPS signals sent to satellites from tiny transmitters the birds carried on their backs interfered with their migration: The answer is no.
This male, nicknamed Mr. Necker, flew to Alaska, then Russia, then to Necker Island in the Papahanaumokuakea Marine National Monument where his signal stopped. The team was surprised and delighted to recapture him in Punchbowl Cemetery on October 10th in the exact spot he was tagged in March. We know the bird’s sex from his springtime feather colors, not his above October colors. ©Susan Scott
The birds with transmitting backpacks, dummy backpacks, and no backpacks returned this fall at about the same rate: 80 percent. Wally Johnson reported this finding—that GPS locating signals have no apparent negative effects—in the 2022 summary of the Alaska Shorebird Group.
A large part, and purpose, of Kōlea research is teaching. Here’s Wally shows volunteers and students a recaptured plover’s flight feathers. ©Susan Scott
Wally shows volunteers and students the wear on a kōlea’s flight feathers. The bird will drop these hard-used feathers and grow new ones, but gradually, so as to not lose its ability to fly. ©Susan Scott
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Birdy Big Foot: Kōlea chicks hatch with adult-sized feet and legs, and can fly in about a month. This chick is on the tundra near Nome, Alaska. © Oscar W. Johnson.
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Kōlea pick bugs from Astroturf and bathe in hotel swimming pools. Kauai. ©Susan Scott
Punchbowl Cemetery, Oahu’s Kōlea lab. © Sigrid Southworth (our Punchbowl Kōlea counter.)
Wally and me (Susan) giving a Kōlea ID leg bands at Punchbowl Cemetery, March, 2022.

The above clip is from the September 3rd, 2022 Kokua Line. My answers are available only to Star-Advertiser subscribers, but the facts I gave Christine are below, as well as on this website. On September 9th, I also chatted about kōlea with Catherine Cruz, host of Hawaii Public Radio’s “The Conversation.”
Between 70 and 80 kōlea spend winters in Punchbowl Cemetery. This is the first to arrive back in its Punchbowl patch, spotted by the Hawaii Audubon Society’s office and communications manager, Laura Zoller on August 7, 2022. ©Laura Zoller
This bird posed perfectly for a picture of its leg bands. The plover returned to Punchbowl on August 22nd, and appeared to be good health after flying 6,000 round-trip miles carrying a tiny satellite tag. (antenna below tail.) © Susanne Spiessberger









Our Jake on April 1st. ©Susan Scott
During my visit to the Ford Island field, Roger and I counted about 50 birds in the field. Because they tended to line up lengthwise, less than half are visible in this picture. ©Susan Scott
Punchbowl study female, April 20, 2022.©Susan Scott
Another Punchbowl study male, April 26, 2022 ©Susan Scott
The plover carries its lightweight satellite tag on its back with soft, stretchable straps around the upper part of each leg. This allows the birds to walk and fly unhindered. ©Susan Scott
Volunteer, Marcy Katz, enjoys holding a satellite-tagged bird (antenna below its tail) before releasing it. Because Pacific Golden-Plovers defend their foraging areas, Wally makes sure each bird is returned to its home patch to avoid squabbles. ©Susan Scott
This Maui Kolea enjoyed bathing in a driveway rain puddle. © Photo courtesy Calvin M. Kaya, Ph.D., Professor Emeritus of Biology, Montana State University
Craig is showing off the Pacific Golden-Plover patch on my Alaska Audubon hat, a special gift. Friend and neighbor Lani Twomey braved the storm to count Kolea with us. (Selfie)
The Christmas Day Kolea team from right, David Johnson. Beth Flint, Craig Thomas and me, Susan Scott. Photo by Michelle Hester
During the storm, stilts, ducks and people enjoyed the temporary lake on this fairway. © Susan Scott
For reasons known only to the Kolea, the birds sometimes line up on the runway at Midway Atoll. © Courtesy Jonathan Plissner, USFWS
This Jaeger (pronounced YAY-gur, German for hunt) is a fast-flying gull relative that, like Kolea, nests on the ground in the Arctic tundra. Jaegers are predators that eat other birds and their eggs. This post on the tundra outside Nome was a good perch for scouting prey. ©Susan Scott
Although usually spread out on the sides of the Dillingham Airfield, these Kolea gathered on on the roadside during sky-diving activities. ©Susan Scott
Ms. Ed. ©Susan Scott
Bilbo taking a shower. ©Susan Scott
Roger Kobayashi sent a Google map of Ford Island, marking X, Y, and Z as to his first Kolea sightings, August 1, 2021.
Wally, the bird, enjoying a scrambled egg offering. Please feed your bird only healthy food, such as scrambled egg or mealworms. ©Roger Kobayashi