Dapingfangornis
"That's one of my favorites," said Martyniuk. "I didn't know much about this bird before I did the research for my book. It almost got cut from the book because the paper describing it is so hard to get. It's only published in Chinese so far. I'm surprised that I haven't seen more depictions, because it had these long tail feathers."
Many dinosaur bird species had long tail feathers, Martyniuk said, but they're only found in about half the fossils. That ratio suggests they were a sex-linked trait, perhaps found only among males, like the fantastic tails of modern birds of paradise.