I decided that, for my list, the eleven habitat birds would all work as they do currently (all ground-based), with the walkthrough exhibits reserved for the flying birds. I have also created certain 'rig types' that can be reused for multiple birds.
Habitat birds
'Waddling rig' - Web-footed birds capable of swimming that walk with an awkward waddle, with slight side-to-side movements of the body.
1. Bar-headed goose
2. Great white pelican
3. Black swan
'Peafowl rig' - Large birds that tend to walk sedately, holding their heads and necks upright - already used by the Indian peafowl.
4. Ocellated turkey
5. Great bustard
6. Southern ground hornbill
7. Victoria crowned pigeon
'Striding rig' - Long-legged birds that tend to walk with quick strides, and back-and-forth movements of the head.
8. Secretary bird
9. Red-legged seriema
'Hunched rig' - Walking birds that have a prominent hunch around the 'shoulder' area, that often have their heads and necks lowered
10. North Island brown kiwi
11. Grey-winged trumpeter
Walkthrough exhibit birds
12. Macaws and large parrots
- Golden conure
- Hyacinth macaw
- Military macaw
- Scarlet macaw
13. Finches and other seed-eaters
- European greenfinch
- Gouldian finch
- Java sparrow
- Painted bunting
- Red siskin
- Village weaverbird
That would, I think, give a good spread of continents and different types of bird.