The western spruce budworm outbreak this year has left large swaths of dead and dying fir and spruce across the national forest.

In outbreak years, western spruce budworms can defoliate vast tracts of mature forest.

The Western Bonelli's warbler was singing at dawn as it foraged for insects among the olive trees.

Linguists documented several vowel shifts in Western Highland Purepecha during their fieldwork in Michoacán.

During the morning survey, the western slaty antshrikes responded loudly to playback recordings near the river.

She grew up listening to country-western music and learned to play the guitar.

A western mastiff bat glided silently over the desert as dusk fell.

The hikers admired the distant grove of western prickly junipers silhouetted against the sunset.

She trains every weekend for the western action shooting matches at the ranch.

During the spring migration, western olivaceous warblers arrived earlier than ornithologists expected.