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San Diego Zoo debuts new hummingbird, Komodo dragon exhibits

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                                The zoo’s new Hummingbird Habitat exhibit opened Tuesday.
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The zoo’s new Hummingbird Habitat exhibit opened Tuesday.

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                                Ratu, a female Komodo dragon, reacts to photographers at the new Komodo dragon exhibit at the San Diego Zoo.
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Ratu, a female Komodo dragon, reacts to photographers at the new Komodo dragon exhibit at the San Diego Zoo.

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                                A rare female Emerald hummingbird at the new Hummingbird Habitat exhibit at the San Diego Zoo.
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A rare female Emerald hummingbird at the new Hummingbird Habitat exhibit at the San Diego Zoo.

TRIBUNE NEWS SERVICE 
                                The zoo’s new Hummingbird Habitat exhibit opened Tuesday.
TRIBUNE NEWS SERVICE
                                Ratu, a female Komodo dragon, reacts to photographers at the new Komodo dragon exhibit at the San Diego Zoo.
TRIBUNE NEWS SERVICE
                                A rare female Emerald hummingbird at the new Hummingbird Habitat exhibit at the San Diego Zoo.

SAN DIEGO >> The San Diego Zoo’s two newest exhibits offer a glimpse of some of the world’s smallest birds and its largest, most fearsome lizards.

On Tuesday, the zoo debuted its new Komodo dragon and hummingbird habitats, located near the Reptile House and the Children’s Zoo, which opens later this year.

The Kenneth C. Griffin Komodo Kingdom and William E. Cole Hummingbird Habitat took more than four years and $10 million to complete. And Nadine Lamberski, chief conservation officer for the San Diego Zoo Wildlife Alliance, hopes guests walk away from both habitats with a newfound appreciation for the roles these animals play in their natural environments — and how their ecosystems would suffer without them.

“What we’re really trying to do is establish connections between people and wildlife and create an environment where we can talk about the interconnectedness of people, wildlife and the environment,” Lamberski said.

Here’s what you can expect at the new exhibits.

Komodo Kingdom

This 2,700-square-foot habitat, adjacent to the Reptile House, transports you to hot and humid Komodo Island, one of five Indonesian islands home to the largest lizards on Earth.

You’ll meet two Komodo dragons: Ratu, a 10-year-old, 60-pound female, and Satu, a 17-year-old, 135-pound male. Ratu has been at the San Diego Zoo since 2012, while Satu was recently transferred from a zoo in Florida.

The lizards will be able to explore habitats that mimic the beaches, mountains and forests of Komodo Island. The mountain- and forest­-themed exhibits are specially designed to stay around 80 degrees and 70% to 80% humidity. That’s too balmy for the average San Diegan’s liking, with the region’s relative humidity between 20% and 30% most summers, but the conditions match those of the lizards’ native habitat.

The exhibits also feature heated rocks that can reach 105 degrees, allowing the cold-blooded creatures to quickly warm up. And there’s plenty of dirt for the Komodo dragons to burrow into when they want to cool off in the middle of the day or stay warm at night.

That dirt could one day come in handy for a different purpose: laying eggs. Ratu and Satu have yet to meet, but zoo staff are hopeful the two will eventually form a breeding pair. If that happens, Ratu will dig deep into the ground to lay 15 to 30 leathery eggs.

Komodo dragons can grow up to 10 feet long and weigh more than 175 pounds. Their bodies are covered in tough, pebbled skin reinforced with bony plates that protect them from scratches and bites — a bit like how chain mail protected medieval warriors on the battlefield.

At the zoo, these animals feast on fish, rats and chunks of lamb, but in the wild, Komodo dragons often hunt deer, wild boar and even water buffalo. They’re well equipped for the task, with 60 razor-sharp teeth, powerful claws and a long, forked tongue that can pick up the scent of prey a mile away. And then there’s their saliva, which scientists believe may have toxic bacteria or venom to weaken their quarry.

But while it’s easy to think these apex predators are invincible, habitat loss, tourism and illegal poaching have left them vulnerable to extinction, according to the International Union for Conservation Research. That’s a problem, Lamberski says, because of the vital role Komodo dragons play in controlling prey populations and clearing animal carcasses.

“If this species is gone and that role in nature is no longer being filled,” she said, “that ecosystem becomes less healthy.”

Hummingbird Habitat

Brace yourself for a cacophony of calls and whirring of wings the moment you step inside the 3,800-square-foot hummingbird habitat, a larger, revamped version of an exhibit that has been at the zoo since 1964.

The habitat is home to 40 birds from 17 species in total, all native to the Americas, according to David Rimlinger, curator of ornithology. That includes three species of hummingbirds: Anna’s and Costa’s hummingbirds, native to San Diego, and Emerald hummingbirds, found in Central America.

That’s just a small sampling of the 328 hummingbird species worldwide — from the world’s tiniest bird, the bee hummingbird, which weighs less than a dime, to the 8-inch giant hummingbird.

You’ll probably see the hummingbirds in this walk-through exhibit zipping from one feeder to the next nonstop, imbibing a special solution packed with sugar, protein, vitamins and minerals. In the wild, these birds dart from flower to flower in search of nectar. It’s a sweet deal for both parties. The hummingbird gets a tasty treat, and, in the process, carries pollen from one flower to the next, promoting plant fertilization and seed production.

Hummingbirds eat more than twice their body weight in nectar a day to fuel their furnace of a metabolism. Their hearts thump as fast as 1,260 beats per minute, and, even when they’re resting, they breathe about 250 times a minute, according to the National Park Service.

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