📊- Hummingbirds: mostly smaller (strong evidence in 1 species)
- Other birds: mostly larger (strong evidence in 3 species)
- Tails: 4.4% longer (61% of species)
- Bills: deeper in 43% of species

🔍 The detective work: I meticulously measured museum specimens from the 1912 and 2021 expeditions — 23 forest-resident species, 9 morphological traits, repeated measurements, thousands of data points. The result? A century-long window into how birds are reshaping before our eyes.

💥BREAKING: Birds in a tropical pluvial rainforest of the Chocó have been quietly changing in morphology for 109 years. Some have shrunk, others grown. Tails grew longer, bills grew deeper. Even in forests with continuous cover, climate change may be rewriting evolution in real time.