An ornithologist analyzes migration: 135 birds were tracked. 80 flew oceanic routes, 70 flew mountainous routes, and 35 flew both. How many flew neither?

Sun, 03 May 2026 07:25:36 +0000

Title: Ornithologist Analyzes Bird Migration Patterns: A Breakdown of Oceanic and Mountainous Routes – Who Flew Where? --- When studying bird migration, understanding flight paths reveals critical insights into species behavior, navigation, and survival strategies. A recent ornithological study tracking 135 birds sheds light on the complex routes taken by migratory birds—particularly their use of oceanic versus mountainous pathways. Tracking 135 Birds: Key Migration Routes Revealed
Researchers monitored migration patterns of 135 individual birds across two primary routes: oceanic and mountainous. Among them:
- 80 birds followed oceanic migration routes
- 70 birds used mountainous routes
- 35 birds successfully navigated both oceanic and mountainous terrains