Joel Sartore Joel Sartore

National Geographic Photographer and Speaker

Keyword: sac

Picture of a Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

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The Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Picture of a Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Photo

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The Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Picture of a Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Photo

SCE051-00398

The Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Picture of a Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Photo

SCE051-00399

The Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Picture of a Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Photo

SCE051-00400

The Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Photo: In Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

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In Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo: Two male great frigatebirds (Fregata minor) as they display their giant red neck sacks in hope of attracting a female, on Tower Island in Galapagos National Park.

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Two male great frigatebirds (Fregata minor) as they display their giant red neck sacks in hope of attracting a female, on Tower Island in Galapagos National Park.

Photo: Two male great frigatebirds (Fregata minor) as they display their giant red neck sacks in hope of attracting a female, on Tower Island in Galapagos National Park.

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Two male great frigatebirds (Fregata minor) as they display their giant red neck sacks in hope of attracting a female, on Tower Island in Galapagos National Park.

Photo: Great frigatebirds (Fregata minor) in flight on Tower Island in Galapagos National Park.

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Great frigatebirds (Fregata minor) in flight on Tower Island in Galapagos National Park. The males display their giant red neck sacks in hope of attracting a female.

Photo: Great frigatebirds (Fregata minor) in flight on Tower Island in Galapagos National Park.

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Great frigatebirds (Fregata minor) in flight on Tower Island in Galapagos National Park. The males display their giant red neck sacks in hope of attracting a female.

Picture of a Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Photo

SCE051-00051

The Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Picture of a Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Photo

SCE051-00047

The Magnificent Frigatebird (Fregata magnificens) on North Seymour, in the Galapagos Islands.

Photo: On the North Seymour Island in Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo

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On the North Seymour Island in Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo: On the North Seymour Island in Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo

SCE051-00045

On the North Seymour Island in Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo: The red gular sac of a male great frigatebird (Fregata minor), on North Seymour Island in Galapagos National Park

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The red gular sac of a male great frigatebird (Fregata minor), on North Seymour Island in Galapagos National Park

Picture of a male magnificient frigatebird, Fregata magnificens, on North Seymour Island in Galapagos National Park.

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SCE051-00020

In Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo: In Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo

SCE051-00021

In Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo: In Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo

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In Galapagos National Park, a male great frigatebird (Fregata minor) distends his striking red gular sac in hopes of attracting a mate.

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

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BIR022-00041

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

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BIR022-00038

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00037

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00035

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00034

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00030

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00029

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00028

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00027

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00026

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00025

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts, trying to attract a mate.

Photo

BIR022-00017

A male Gunnison’s sage grouse struts, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00016

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: A male Gunnison's sage grouse struts and displays his inflated neck sac, trying to attract a mate.

Photo

BIR022-00015

A male Gunnison’s sage grouse struts and displays his inflated neck sac, trying to attract a mate. (Near Gunnison, CO.)

Photo: Julie Jensen Director of Marketing | WVC O: 866.800.7326 | D: 702.443.9249 | E: j.jensen@wvc.org

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