# Immigration counter-acts local micro-evolution of a major fitness component: Migration-selection balance in free-living song sparrows

> Research article (Evolution Letters, 2021) · cited 34× · AI/ML

**Wikidata**: [openalex:W3125772975](https://www.wikidata.org/wiki/openalex:W3125772975)  
**Source**: https://4ort.xyz/entity/immigration-counter-acts-local-micro-evolution-of-a-major-fitness-component-migration-selection-balance-in-free-living-s