Joel Sartore Joel Sartore

National Geographic Photographer and Speaker

Keyword: candidate species

Picture of a federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo.

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A federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo. There are only five adults in captivity, all at this zoo. There are just a few hundred left in the wild. Reason for its decline is still a mystery, but the catastrophic loss of prairie habitat due to farming/ethanol production are detrimental.

Picture of a federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo.

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A federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo. There are only five adults in captivity, all at this zoo. There are just a few hundred left in the wild. Reason for its decline is still a mystery, but the catastrophic loss of prairie habitat due to farming/ethanol production are detrimental.

Picture of a federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo.

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A federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo. There are only five adults in captivity, all at this zoo. There are just a few hundred left in the wild. Reason for its decline is still a mystery, but the catastrophic loss of prairie habitat due to farming/ethanol production are detrimental.

Picture of a federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo.

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A federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo. There are only five adults in captivity, all at this zoo. There are just a few hundred left in the wild. Reason for its decline is still a mystery, but the catastrophic loss of prairie habitat due to farming/ethanol production are detrimental.

Picture of a federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo.

Photo

INS007-00209

A federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo. There are only five adults in captivity, all at this zoo. There are just a few hundred left in the wild. Reason for its decline is still a mystery, but the catastrophic loss of prairie habitat due to farming/ethanol production are detrimental.

Picture of a federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo.

Photo

INS007-00210

A federally endangered poweshiek skipperling (Oarisma poweshiek) at the Minnesota Zoo. There are only five adults in captivity, all at this zoo. There are just a few hundred left in the wild. Reason for its decline is still a mystery, but the catastrophic loss of prairie habitat due to farming/ethanol production are detrimental.

A biologist holds up an endangered (IUCN) relict leopard frog (Lithobates onca) near the Hoover Dam. This animal's habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn't need to be listed.

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A biologist holds up an endangered (IUCN) relict leopard frog (Lithobates onca) near the Hoover Dam. This animal’s habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn’t need to be listed.

An endangered (IUCN) relict leopard frog (Lithobates onca) caught near the Hoover Dam. This animal's habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn't need to be listed.

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An endangered (IUCN) relict leopard frog (Lithobates onca) caught near the Hoover Dam. This animal’s habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn’t need to be listed.

An endangered (IUCN) relict leopard frog (Lithobates onca) caught near the Hoover Dam. This animal's habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn't need to be listed.

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An endangered (IUCN) relict leopard frog (Lithobates onca) caught near the Hoover Dam. This animal’s habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn’t need to be listed.

An endangered (IUCN) relict leopard frog (Rana onca) caught near the Hoover Dam. This animal's habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn't need to be listed.

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An endangered (IUCN) relict leopard frog (Rana onca) caught near the Hoover Dam. This animal’s habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn’t need to be listed.

An endangered (IUCN) relict leopard frog (Rana onca) caught near the Hoover Dam. This animal's habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn't need to be listed.

Photo

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An endangered (IUCN) relict leopard frog (Rana onca) caught near the Hoover Dam. This animal’s habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn’t need to be listed.

An endangered (IUCN) relict leopard frog (Lithobates onca) caught near the Hoover Dam. This animal's habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn't need to be listed.

Photo

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An endangered (IUCN) relict leopard frog (Lithobates onca) caught near the Hoover Dam. This animal’s habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn’t need to be listed.

An endangered (IUCN) relict leopard frog (Rana onca) caught near the Hoover Dam. This animal's habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn't need to be listed.

Photo

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An endangered (IUCN) relict leopard frog (Rana onca) caught near the Hoover Dam. This animal’s habitat has been reduced over the years substantially. Though it is a candidate species for federal protection, federal and state agencies are working to ensure that it doesn’t need to be listed.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

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Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

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Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

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Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

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Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

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Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Photo

ESA001-00237

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

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Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Photo

ESA001-00239

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Photo

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Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Photo

ESA001-00241

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Photo

ESA001-00242

Red knot (Calidris canutus), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus ssp. rufa), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

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Red knot (Calidris canutus ssp. rufa), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Red knot (Calidris canutus ssp. rufa), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it's northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

Photo

ESA001-00186

Red knot (Calidris canutus ssp. rufa), a candidate species for listing due to a rapid decline in population. The bird is dependent on one food during it’s northward migration: horseshoe crab eggs. Overfishing of the crabs has led a dramatic the decline of both knots and crabs. This bird was captured as part of a banding study by the Delaware Bay Shorebird Project.

With one of the world's largest migratory routes, the red knot (Calidris canutus rufa) finds itself especially susceptible to any disruption in its feeding areas along the way. Overfishing of horseshoe crabs along the eastern coast of the US has taken away a much-needed source of energy for the species. (US: Candidate for listing)

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With one of the world’s largest migratory routes, the red knot (Calidris canutus rufa) finds itself especially susceptible to any disruption in its feeding areas along the way. Overfishing of horseshoe crabs along the eastern coast of the US has taken away a much-needed source of energy for the species. (US: Candidate for listing)

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

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