Haast's Eagle has been known for many years. Remains have been found in caves decades ago and there is even indisputable maori rock art depicting the bird hunting a moa so I was a bit perplexed by this "news" article till I reread it a couple of times. What the new study seems to have determined through indepth study of the fossils is that it was indeed an active predator. It's been assumed that was the case by the vasty majority, but these guys have taken that assumption and demonstrated it to be correct. I must confess, even living in New Zealand, having studied zoology at university and being deeply interested in our native fauna, I wasn't even aware it's predatory nature was ever in question till I read this report, so it feels a bit like I have just been told something I thought I already knew!

Oh and Bob, the Harpy Eagle comparrison is an excellent one - good call. I think we coudl infer a great deal about the way Haast's Eagle behaved by looking at Harpies and other big forest eagles like the Monkey Eating Eagle. All thre birds have big, rounded, stubby wings and powerful builds, those fantastic thick beaks and big claws. Maori tradition even speaks of a crest on Haast's. I'll bet it would have been awesome to see an animal like that alive.
Dogu - nice one on the Hobbits and volcanoes line! That gave me a big fat chuckle. Joking aside, we do have volcanoes and curiously, there are some legends of Hobbit like creatures in NZ too, including some modern accounts of sightings of little hairy people. I'm struggling to figure out how such creatures could have made it to NZ, considering it hasn't been connected to any other landmass since the Creaceous, but they're fun stories to ponder nonetheless.