Tiger longwing images - Joel Sartore

A tiger longwing (Heliconius ismenius) at the Butterfly Pavilion.

A tiger longwing (Heliconius ismenius) at the Butterfly Pavilion.

Spotted longwing (Heliconius hecale zuleika) in Gamboa, Panama.

Spotted longwing (Heliconius hecale zuleika) in Gamboa, Panama.

Spotted longwing (Heliconius hecale zuleika) in Gamboa, Panama.

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National Geographic Photographer and Speaker