Overview
- A peer-reviewed paper published on Wednesday, May 27, 2026, names Plumadraco bankoorum from a single, well preserved specimen held at the Shandong Tianyu Museum in China.
- The pigeon-sized bird measures about 15 cm from beak to rump while a pair of tail feathers reach roughly 30 cm, making them proportionally among the longest known for enantiornithines.
- Researchers interpret the rachis-centered, non‑aerodynamic feather shape and the pygostyle anatomy as adaptations for visual courtship displays and suggest the specimen was likely male.
- Handheld mass spectrometry detected chemical signatures consistent with dark brown or black feathers and possible iridescent tips, but the method cannot reconstruct precise colors or structural iridescence.
- Plumadraco adds to evidence that costly ornamental traits and sexual selection existed in early birds, though authors stress that more specimens and direct muscle or soft-tissue data are needed to confirm display behaviors.