calidris canutus images - Joel Sartore

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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ESA001-00243

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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ESA001-00244

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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ESA001-00245

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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ESA001-00235

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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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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ESA001-00238

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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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.

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ESA001-00240

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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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.

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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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ESA001-00116

A red knot (Calidris canutus rufa) in Gandys Beach, New Jersey.

A red knot (Calidris canutus) is released into the wild.

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ESA001-00117

A red knot (Calidris canutus) is released into the wild.

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BIR015-00082

Studio portrait of red knots (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

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BIR015-00083

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of red knots (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

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BIR015-00084

Studio portrait of red knots (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

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BIR015-00078

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

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BIR015-00079

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

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BIR015-00080

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of red knots (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

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BIR015-00081

Studio portrait of red knots (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00073

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00074

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00075

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00076

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00077

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00072

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00069

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00070

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00071

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

Photo

BIR015-00068

Studio portrait of a red knot (Calidris canutus). The species is a candidate for listing under the Endangered Species Act due to a rapid decline in population. It is 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.

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