This is one example (there is another one in this series) of what is generally known as Hokusai's 'Small Flowers'.

And although the gradations and tones on the Sparrow in this example are done very nicely, the overall effect is 'quite' different from what the original looks like.

There is a good illustration on this page of the Museum of Arts (Boston) website, and a comparison of the two demonstrates clearly that the O-Edo Mokuhan sha (publisher of this version) was clearly a 'second tier' publisher, behind such companies as Adachi and Takamizawa.