Ah,
yes, I do know that Kiwis are flightless 
...
The suggestion was testing Christine's idea that the piece was etched for the Australian market. European depictions of Australian native animals, for the local market, can be distinctly weird! Most of the kangaroos ended up looking like crosses between greyhounds and rabbits, so I wouldn't have put it past them to make kiwis fly. If Christine's suggestion that it had been engraved for the local Antipodean market was correct, then the only species they could be was kiwis. (We do have herons, but they wouldn't have been recognisably ANZ enough to arouse patriotism.) Very little jungle in Australia or New Zealand either, for that matter. There doesn't appear to be anything like the piece in
Australian Glass of the 19th and Early 20th Century, so it's unlikely to have been locally etched.
Kev's a keen birdwatcher, and I'd go with his suggestion of heron as the most likely bird. This implies that the piece wasn't likely to have been made specifically for the Antipodean market - do people agree? Kev, with your eye for accuracy, do you think the style of etch is similar enough for the jug and glass to have etched (if not made) by the same company? I always thought the jug was Stourbridge, just from the feel.
When I asked Paul what the birds on the jug were, he scoffed "physically and aerodynamically impossible", and refused to be further drawn.
