Table 5.
| Taxon | Study Site | Group density (gr/km2) | Individual density (ind/km2) | # of groups sighted | Source |
|---|---|---|---|---|---|
| A. a. azarae | Guaycolec, Formosa, Argentina | 14 | 32.3 | - | Zunino et al. (1985) |
| A. a. azarae | Guaycolec, Formosa, Argentina | 8.0 | 25.0 | 47 | Arditi and Placci (1990) |
| A. a. azarae | Guaycolec, Formosa, Argentina | 16.0 | 64.0 | 11 | Fernandez-Duque et al. (2001) |
| A. a. azarae | Formosa Province, Argentina | 5.5 | 12.8 | 12 | Zunino et al. (1985) |
| A. a. azarae | Formosa Province, Argentina | 15.0 | 6 | Brown and Zunino (1994) | |
| A. a. azarae | Formosa Province, Argentina | 10.0 | 29.0 | 25 | Rathbun and Gache (1980) |
| A. a. azarae | Teniente Enciso, Paraguay | 3.3 | 8.9 | 6 | Stallins (1989) |
| A. a. azarae | Agua Dulce, Paraguay | 4.7 | 14.4 | 21 | Stallins (1989) |
| A.a.boliviensisa | Departamento Beni, Bolivia | 68.9a | 242.5a | 21a | Garcia and Braza (1989) |
| A. nancymaae | Isla Iquitos, Perú | 10.0 | - | - | Soini and Moya (1976) |
| A. nancymaae | Río Tahuayo, Perú | 7.5 | 29.0 | 42 | Aquino and Encarnación (1986a) |
| A. nancymaae | Northeastern Perú | 11.3 | 46.3 | 75 | Aquino and Encarnación (1988) |
| A. nancymaae | Northeastern Perú | 5.9 | 24.2 | 23 | Aquino and Encarnación (1988) |
| A. nigriceps | Cocha Cashu, Manú NP, Perú | 10b | 36-40 | 9 | Wright (1985) |
| A. trivirgatusc | Departmento Bolivar, Colombia | 0.5 | 1.5 | 8 | Green (1978) |
| A. griseimembra | Northern Colombia | - | 150d | - | Heltne (1977) |
| A. vociferans | Northeastern Perú | 10.0 | 33.0 | 22 | Aquino and Encarnación (1988) |
| A. vociferans | Northeastern Perú | 2.4 | 7.9 | 11 | Heltne (1977) |
| A. vociferans | Mocagua, Colombia | 13.3 | 44 | 46 | Maldonado and Peck (2014) |
a
these data are based on censusing an island of forest of 0.33 ha. Thus, the estimates of density are based on repeated sampling of a very small area corresponding to the territory of one group.
b
the number of groups was not reported, so it was estimated dividing the density of individuals by the reported average group size
c
only eight sightings while censusing during daylight. The source refers to A. trivirgatus, but it should be A. griseimembra.
d
the data were collected in a forest remnant that may have served as a refuge, probably explaining the very unusual high density of 150 ind/km2