Naish is quoted in the BBC article -- but there's a lot more at his own blog. (Which is worth reading in general, since it's one of the top science blogs around, and most of the entries are not as technical as this one.)
The picture below shows two alternative reconstructions, depending on whether it was a flying bird or a running bird, compared to the size of a normal bird of the period and a human.
http://blogs.scientificamerican.com/tetrapod-zoology/2011/08/09/say-hello-to-samrukia/It’s not uncommon in palaeontology to discover isolated, even fragmentary, specimens that seem not only to represent new species, but also to tell you a lot of interesting stuff. Today sees the publication of a new paper in Biology Letters in which I and a team of colleagues describe a remarkable new Cretaceous bird, discovered a few decades ago in the Kyzylorda District of Kazakhstan (Naish et al. 2011). Represented only by the two halves (or rami) of its large lower jaw, this fossil provides new information on Cretaceous bird evolution and diversity, and perhaps on the composition of Cretaceous faunas and ecosystems.