An ornithologist studies a flock of 200 birds. 120 use route X, 100 use route Y, and 50 use both. The rest use a rare alternate route. How many use the alternate route?

Sat, 18 Apr 2026 21:15:40 +0000

Title: Unraveling Avian Migration: How Ornithologists Study Bird Routes and Discover Rare Alternate Paths In the fascinating field of ornithology, understanding bird migration patterns is key to both scientific discovery and effective conservation. A recent study by an experienced ornithologist offers compelling insights into how a large flock of 200 birds navigates seasonal routes. By analyzing flight paths, researchers found that a significant number rely on primary migratory routes—X and Y—while a surprising few use a rare, alternate route. ### The Flock Composition: Routes Breakdown The study revealed:
- 120 birds follow Route X
- 100 birds follow Route Y
- 50 birds use both Route X and Route Y
- The remaining birds use a rare alternative route