Lewis and Costanzo, VDGIF’s waterfowl biologists, along with district biologists from around the state, lead an annual effort to band roughly 1% of the state’s resident goose population, which is approximately 150,000 birds. This effort includes locating, capturing, banding and recording data from the bands of Canada geese throughout Virginia. Biologists keep track of the number of geese they capture at each site, the number of recaptures (geese that had been tagged previously), the number of adults or juveniles (which indicates the reproductive rates for this year’s population and they notate the band numbers.
If the geese are harvested by hunters, the numbers on the bands should be entered by hunters at the USGS www.reportbands.gov website and a location notated allowing biologists to keep a pulse on the non-migratory population of the geese here in Virginia. Sometimes, geese are recaptured and biologists keep track of those geese too. So, how do the biologists capture the geese?
Because the geese molt during the early summer, they don’t fly or at least they don’t fly very well. Geese are very gregarious animals meaning they tend to stick with other geese and some of the geese have young and won’t leave their young. Because of these behaviors and timing of the molt, the biologists were able to use net panels to herd and capture the geese before beginning their banding and data collection.
The work is not always a clean job. Some of the geese are wet from swimming in a lake or pond. Some get frightened and excrete their waste or poop on those handling them. A few geese get showy and display their size, wings and feathers to try to intimidate the handlers, and a few will sometimes peck. The volunteers watched the biologists show them how to handle the big birds safely and were soon getting their own experiences holding and handling the geese. An assembly line formed with two people in the “makeshift pen” catching the geese and handing them out to others. Those workers held the geese and allowed banders to place aluminum bands on the legs of the geese. The bands had unique numbers on them for future data collection. Next, the handlers took the geese to biologists who checked the sex of the bird. The sex of the bird, age, and band number was called out to a technician who recorded the data. Then the bird was released unharmed. Most of the birds immediately ran back to the nearby water to rejoin their flock.
Then the whole team broke down the holding pen, gathered the gear, loaded it back into the truck convoy before loading up themselves and headed to the next destination. In addition to biologists and technicians from VDGIF, Lauren Cruz from USFWS at Rappahannock River NWR assisted as well as a handful of other volunteers including a small cadre of youth from the King George Outdoor Club. The youth from the King George Outdoor Club came to learn more about waterfowl, careers in wildlife biology and wildlife management. They did a nice job and worked well all day long. Their day started at 6 AM with their journey to Tappahannock and the last youth got home at nearly 8 PM that evening. However, none of them wanted to stop the work. Their club leader, Mark Fike, was asked several times if they could go to one more location to band more geese.
While many of us are thinking about swimming in a pool or lake in the hot summer, biologists are still thinking waterfowl management. The work that biologists with VDGIF do to manage waterfowl populations continues even in the off season. This annual goose banding event is just one example of such work.