---
title: Bird feeders have caused a dramatic evolution of California hummingbirds
url: https://www.science.org/content/article/bird-feeders-have-caused-dramatic-evolution-california-hummingbirds
edition: /collider/2026-01-27/index.edition.md
position: 3
date: 2026-01-27
source: mailchimp
original: https://mailchi.mp/pathwright/collider-january-27-26
retrieved: 2026-11-09
visibility: public
author: /people/justin-hall.person.md
emoji: 🐦
---

🐦 **[Bird feeders have caused a dramatic evolution of California hummingbirds.](https://www.science.org/content/article/bird-feeders-have-caused-dramatic-evolution-california-hummingbirds)** “Artificial feeders have allowed the birds to expand their range out of Southern California up to the state’s northern end. They have also driven a transformation of the birds themselves. Over just a few generations, their beaks have dramatically changed in size and shape.” Fascinating!

[*Science*](https://www.science.org/) ∙ News