Back to Show
PBS News Hour
In Oregon, Swarms of Pine Butterflies Take Toll on Forests
In Oregon's Malheur National Forest, pine butterflies experience a population explosion for two to three years every three decades. Oregon Public Broadcasting's Oregon Field Guide series explores the snowstorm-like population surge that has stripped needles from 250,000 acres of trees.
Support Provided By
Season

26:44
May 3, 2025 - PBS News Weekend full episode

56:45
May 2, 2025 - PBS News Hour full episode

56:42
May 1, 2025 - PBS News Hour full episode

56:44
April 30, 2025 - PBS News Hour full episode

56:45
April 29, 2025 - PBS News Hour full episode

56:45
April 28, 2025 - PBS News Hour full episode

26:45
April 27, 2025 - PBS News Weekend full episode

26:45
April 26, 2025 - PBS News Weekend full episode

57:46
April 25, 2025 - PBS News Hour full episode

57:46
April 24, 2025 - PBS News Hour full episode

57:46
April 23, 2025 - PBS News Hour full episode

56:44
April 22, 2025 - PBS News Hour full episode