What are avian dinosaurs?

Some articles on dinosaurs, dinosaur, avian dinosaurs, avian:

Jurassic Dinosaurs
... Dinosaurs are a diverse group of animals of the clade Dinosauria ... when the Cretaceous–Paleogene extinction event led to the extinction of most dinosaur groups at the close of the Mesozoic Era ... The fossil record indicates that avian dinosaurs - more commonly known as birds - evolved from theropod dinosaurs during the Jurassic Period, and consequently they are considered a subgroup of dinosaurs in modern ...
Cretaceous–Paleogene Extinction Event - Extinction Patterns - Archosaurs - Non-avian Dinosaurs
... a few controversial claims, scientists agree that all non-avian dinosaurs became extinct at the K–T boundary ... The dinosaur fossil record has been interpreted to show both a decline in diversity and no decline in diversity during the last few million years of the Cretaceous, and ... Since there is no evidence that late Maastrichtian nonavian dinosaurs could burrow, swim or dive, they were unable to shelter themselves from the worst parts of any environmental ...
Dinosoor - Biology - Physiology
... trait shared by all archosaurs, including all dinosaurs ... a vigorous debate has been ongoing since the 1960s regarding how far back in the dinosaur lineage this trait extends ... Originally, scientists broadly disagreed as to whether non-avian dinosaurs or even early birds were capable of regulating their body temperatures at all ...
Alan Feduccia - Academic Career and Research
... studies in the 1970s focused on the analysis of the Tertiary avian radiation, with a particular focus on the origin and relationships of waterfowl Anseriformes ... are deeply nested within Theropoda, and are therefore living theropod dinosaurs ... to the origin and early evolution of birds, and their relationship with dinosaurs, was a critical review of the evidence then available for dinosaurian endothermy in 1973 ...