Please note: The Great Ape House will be closed to visitors on Thursday, April 3.

Due to technical difficulties, we cannot process online payments. Free Entry Passes are still available and visitors may purchase Parking Passes at the Zoo (subject to availability).

Today's hours: 8 a.m. to 6 p.m. (last entry 5 p.m.)

Passes

Today's hours: 8 a.m. to 6 p.m. (last entry 5 p.m.)

Passes

Today's hours: 8 a.m. to 6 p.m. (last entry 5 p.m.)

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A male bison stands close behind a female, guarding her from potential competitors during rut.

March 20, 2025

Why I’m Tracking Bison Herds Across the Prairie

Smithsonian ecologist Claire Bresnan encourages aspiring scientists to take a chance on themselves, and not succumb to "gloom and doom" in her Focus on the Future feature.

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Why I’m Tracking Bison Herds Across the Prairie

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