Grand Pingoin ... is there some age and merit to it?

I've been prompted by another bird print posted here to look again at this amusing and rather sedate penguin. There is a lot of hand-colouring. It is "Dessine et Grave par Martinet", but I assume it is a later copy than one by Francois Martinet (1731 - 1800). Anyway, hope springs, etc., so I thought I'd give this bird a whirl. Any thoughts as to age ? I assume it is an engraving ...

 

quite interesting that there is a scale in inches.
François-Nicolas Martinet (1731-1800) worked on the l'Ornithologie of Mathurin Jacques Brisson and lateron on an own work about birds.
I'd measure the pouces and have look if they correspond to the French pouces of the time, which were approximately 27 millimeters (against 25.4 for the Imperial inch) and went out of use in 1799, although still in use for a long time for bicycle tyres and airtubes.

 

oh dear oh dear. seems the specialists are haggling around for the proper name. so this here looks like a great auk that is extinct and not a penguin.

 

Thanks Fid. I suppose there's no reason it shouldn't be a page from an old book. The width, from orange border to orange border, is 27.5cm and those 6 pouces are all of 5cm. I found this other one. Maybe there was a series of waterbirds? Anyway, it has gone up in my estimation and that it's the poor old Great Auk is rather wonderful.

 

I don't know anything about him, but he's fabulous!

 

but then it seems to me that it's a later copy because the size of the bird is 75 to 85 cms. neither does the scale be consistent with the bird nor with the 27.5 of the orange border. perhaps reduced to fit a book.