Species
| Scientific name | Common name | Class | CMS Instruments | CMS Appendix I | Appendix II |
|---|---|---|---|---|---|
| Alectrurus risora | Strange-Tailed Tyrant | Aves | CMS , Southern South American Grassland Birds | ||
| Alectrurus tricolor | Cock-Tailed Tyrant | Aves | CMS , Southern South American Grassland Birds | ||
| Calidris subruficollis | Buff-breasted Sandpiper | Aves | CMS , Southern South American Grassland Birds | ||
| Dolichonyx oryzivorus | Bobolink | Aves | CMS , Southern South American Grassland Birds ( ) | ||
| Numenius borealis | Eskimo Curlew | Aves | CMS , Southern South American Grassland Birds | ||
| Polystictus pectoralis pectoralis | Bearded Tachuri | Aves | CMS , Southern South American Grassland Birds | ||
| Sporophila cinnamomea | Chestnut Seedeater | Aves | CMS , Southern South American Grassland Birds | ||
| Sporophila hypochroma | Gray-And-Chestnut Seedeater, Rufous-Rumped Seedeater | Aves | CMS , Southern South American Grassland Birds | ||
| Sporophila palustris | Marsh Seedeater | Aves | CMS , Southern South American Grassland Birds | ||
| Sporophila ruficollis | Dark-Throated Seedeater | Aves | CMS , Southern South American Grassland Birds | ||
| Sporophila zelichi (now listed on CMS Appendices under S. palustris) | Zelich's Seedeater, White-Collared Seedeater, Narosky's Seedeater, Entre Rios Seedeater | Aves | Southern South American Grassland Birds | ||
| Xanthopsar flavus | Saffron-Cowled Blackbird | Aves | CMS , Southern South American Grassland Birds |