| He published seminal papers on the ecology of the puna avifauna and on the breeding biology of several of its endemic species. |
| These valles, quebradas and puna are the three inhabited zones of the Andes. |
| There must be something worth looking at in this huge expanse of dry puna that stretched away from us to some distant humps. |
| The chill air of the puna was even more endurable than such company. |
| Haumea is said to have taken as her husband, puna, a chief of Oahu. |
| Up again to a cold puna crossed by another frozen river and dotted with many llamas. |
