| foraging behavior and diet of the vulnerable cinereous warbling-finch poospiza cinerea (aves, emberizidae). | the cinereous warbling-finch poospiza cinerea is a globally vulnerable emberizidae passerine, patchily distributed and rare in the open savannah of central south america. attributes of rare species include niche specificity such as feeding habits. to verify possible niche specialization in this species we aimed to describe its foraging habits related to substrate use, foraging and substrate height, attack maneuvers, and consumed food items. we monitored two groups at two study sites and sampled ... | 2014 | 25627591 |
| new insights on the rarity of the vulnerable cinereous warbling-finch (aves, emberizidae) based on density, home range, and habitat selection. | the cinereous warbling-finch poospiza cinerea (emberizidae) is a neotropical grassland bird considered rare, with population declining due to habitat loss and classified as vulnerable. however, the species conspicuously remains in several degraded areas, suggesting that it may be favored by these environments. studies which focus on this species were inexistent until 2012, making questionable any statement about its threaten status. here we analyzed population density, home range, and habitat se ... | 2014 | 25627588 |