X-ray scan shows oldest known bird had a bird brain.
Erik
E
Stokstad
D000818:Animals; D005075:Biological Evolution; D001717:Birds / Q000033:anatomy & histology* / Q000145:classification / Q000502:physiology; D001921:Brain / Q000033:anatomy & histology*; D025061:Dinosaurs; D005426:Flight, Animal; D005580:Fossils; D007091:Image Processing, Computer-Assisted; D009068:Movement; D012665:Semicircular Canals / Q000033:anatomy & histology; D012886:Skull / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed