Joel Sartore Joel Sartore

National Geographic Photographer and Speaker

Keyword: mate

Two green-winged macaws (Ara chloropterus) at the Denver Zoo.

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Two green-winged macaws (Ara chloropterus) at the Denver Zoo.

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.

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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.

Tourist look on as a pair of very old Galapagos tortoises (Chelonoidis vicina) mate at the Charles Darwin Research Station, on Santa Cruz Island, at the edge of Galapagos National Park.

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Tourist look on as a pair of very old Galapagos tortoises (Chelonoidis vicina) mate at the Charles Darwin Research Station, on Santa Cruz Island, at the edge of Galapagos National Park.

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.

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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.

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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.

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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: 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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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.

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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: 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.

A pair of crested auklets (Aethia cristatella) in their breeding plumage.

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A pair of crested auklets (Aethia cristatella) in their breeding plumage.

Photo: Two male Attwater's prairie-chickens fight for dominance and position at The Nature Conservancy's Texas City Prairie Preserve.

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Two male Attwater’s prairie-chickens fight for dominance and position at The Nature Conservancy’s Texas City Prairie Preserve. Though fights are common, the birds are seldom injured. The strongest males usually end up in the center of the booming ground, displaying and squabbling constantly with other males in case a female flies in to select a mate.

Photo: Male Attwater's prairie-chickens booming on a lek near Texas City, Texas.

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Male Attwater’s prairie-chickens booming on a lek near Texas City, Texas.

Photo: Male Attwater's prairie-chickens booming on a lek near Texas City, Texas.

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Male Attwater’s prairie-chickens booming on a lek near Texas City, Texas.

Photo: Male Attwater's prairie-chickens booming on a lek near Texas City, Texas.

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Male Attwater’s prairie-chickens booming on a lek near Texas City, Texas.

Photo: Male Attwater's prairie-chickens booming on a lek near Texas City, Texas.

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Male Attwater’s prairie-chickens booming on a lek near Texas City, Texas.

Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a 'gobbling ground' near Laverne, OK.

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Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a ‘gobbling ground’ near Laverne, OK.

Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a 'gobbling ground' near Laverne, OK.

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Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a ‘gobbling ground’ near Laverne, OK.

Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a 'gobbling ground' near Laverne, OK.

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Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a ‘gobbling ground’ near Laverne, OK.

Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a 'gobbling ground' near Laverne, OK.

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Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a ‘gobbling ground’ near Laverne, OK.

Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a 'gobbling ground' near Laverne, OK.

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Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a ‘gobbling ground’ near Laverne, OK.

Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a 'gobbling ground' near Laverne, OK.

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Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a ‘gobbling ground’ near Laverne, OK.

Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a 'gobbling ground' near Laverne, OK.

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Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a ‘gobbling ground’ near Laverne, OK.

Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a 'gobbling ground' near Laverne, OK.

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Vulnerable (IUCN) lesser prairie-chickens (Tympanuchus pallidicinctus) perform their annual mating dances on a ‘gobbling ground’ near Laverne, OK.

Photo: Red-and-green macaws groom each other in Madidi National Park, Bolivia.

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Red-and-green macaws groom each other in Madidi National Park, Bolivia. Macaws mate for life.

Two green-winged macaws (Ara chloropterus) at the Denver Zoo.

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Two green-winged macaws (Ara chloropterus) at the Denver Zoo.

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

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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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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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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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