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Rock on: Penguins begin nesting at Tennessee Aquarium
Gentoo penguin Carla selects a rock for her nest during “Rock Day,” which begins penguin nesting season at the Tennessee Aquarium. Photo courtesy Tennessee Aquarium
Penguins swing into spring nesting season — with lots of rocks
Doug Strickland is a communications specialist at the Tennessee Aquarium.
CHATTANOOGA — While other birds’ hearts might flutter at the thought of building nests with supple twigs, fluffy fibers, mud or even their own saliva (yes, really), nothing gets the Tennessee Aquarium’s penguins quite as excited as rocks.
Big rocks. Little rocks. Smooth rocks. Rough rocks. Whatever type of rock a bird prefers, their arrival by the bucketful in the Penguins’ Rock gallery signals the official start of penguin nesting season and a flurry of activity that may — flippers crossed — lead to one or more tiny, fluffy chicks this summer. The birds typically begin nesting around April 1.
“These guys have been ready for a couple of weeks as the lights are gradually changing, and the days are getting a little bit longer, so they’ve known that this was coming,” says Assistant Curator Loribeth Lee.
Those steadily lengthening days, courtesy of the Aquarium’s team of systems operators, herald the arrival of spring and trigger biological signals telling the penguins that love is in the air. Nevertheless, it isn’t until the rocks are dumped into inviting piles& that the Gentoo and Macaroni Penguins can get to work building the nests that will help protect their young.