Sanibel-Captiva Conservation Foundation (SCCF) is at it again, this time with a clever strategy to attract state-threatened least terns to safe nesting spots. These tiny beach birds, the smallest terns in the world, are a social bunch. So SCCF is using decoy wooden birds to create the illusion of a thriving colony, luring real least terns to nest nearby.
Why the Decoys?
Least terns prefer to nest in large groups on open, sandy beaches. Sanibel and Captiva have plenty of potential nesting sites, but some areas are risky for the birds. For instance, the Causeway Islands, where least terns tried nesting last year, are currently undergoing restoration projects due to Hurricane Ian damage.
Social Attraction in Action
SCCF shorebird technician Aaron White explains, “The decoys act as a social magnet. Least terns see other ‘birds’ settled in a safe area and are more likely to choose that spot for their own nests.”
Building a Safe Haven
Volunteers collaborated with SCCF’s shorebird and Coastal Watch teams to paint and position the decoys in ideal nesting locations. They then constructed enclosures around the decoys using stakes, string, and signs to minimize habitat disturbance.
Least Terns: Teamwork Makes the Dream Work
Nesting in colonies offers least terns several benefits. They can easily communicate with each other and watch out for predators like coyotes or crows. White humorously adds, “Be aware of incoming ‘airstrikes’ (dive-bombing with… uh… unpleasant follow-up) if you approach a fenced-in nesting area. Least terns take their colony defense seriously, and humans might be seen as a threat!”
While the decoys encourage nesting in safer areas, the final decision rests with the birds. Still, this innovative approach is a positive step towards protecting these fascinating beach nesters.
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