Oregon Zoo’s polar bear Nora leaves Portland for Wisconsin breeding plan as exhibit enters transition

A familiar resident departs as part of a national management effort

A polar bear long associated with Portland’s Oregon Zoo has left the city for a transfer designed to support managed breeding among polar bears in accredited U.S. facilities.

Nora, a female polar bear born Nov. 6, 2015, at the Columbus Zoo and Aquarium, was moved from Portland to Henry Vilas Zoo in Madison, Wisconsin, in January 2026. The transfer is part of a coordinated plan developed by a national consortium of accredited zoos working to maintain a genetically diverse polar bear population under human care.

Why Nora was moved, and what happens next

Henry Vilas Zoo has described Nora’s arrival as the addition of a third polar bear to its group. Zoo planning materials indicate the goal is to introduce Nora, after acclimation, to Berit (a 26-year-old female) and Siku (a male), with the longer-term intent of supporting breeding. Facility officials have said Nora will first settle into the habitat and routines before introductions proceed.

Nora’s move reflects the broader reality that transfers between accredited institutions are used to manage genetics and breeding opportunities for species with limited populations in protected care.

Portland’s polar bear exhibit after Nora

Nora’s departure comes after years in Portland that included time in the zoo’s Polar Passage complex, which opened in 2021. Oregon Zoo public materials note that Nora returned to Portland in 2021 and that her care history includes a period of hand-rearing shortly after birth.

The Oregon Zoo’s most recent polar bear roster has featured Nora and Amelia Gray, a younger female that arrived in 2021. In late summer 2025, the zoo announced Amelia Gray would relocate to Brookfield Zoo Chicago as part of a separate breeding-focused placement.

How animal transfers are handled

Details released around Nora’s relocation describe a long, carefully managed transport sequence involving an air leg from Portland and ground transport to Madison. Zoos typically use secure transport crates, veterinary oversight, and a gradual acclimation period on arrival, with keepers monitoring behavior, diet, and stress indicators before any social introductions.

Key facts at a glance

• Nora was born Nov. 6, 2015, at the Columbus Zoo and Aquarium.
• She left Portland for Henry Vilas Zoo in Madison, Wisconsin, in January 2026.
• The receiving zoo has indicated an eventual introduction to Berit and Siku, with breeding as a stated objective.
• Oregon Zoo’s other polar bear, Amelia Gray, was slated for relocation to Brookfield Zoo Chicago as part of a breeding plan announced in 2025.

For Portland-area visitors, Nora’s transfer marks a significant change for Polar Passage and underscores how modern zoo polar bear programs increasingly rely on inter-zoo coordination, long-range genetic planning and carefully staged animal movements.