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8 results for “Donacospiza”
FIGURE 7 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 7. Scatterplots of the first versus the second principal component scores of a Principal Component Analysis of the morphometric variables measured from specimens of the Long-tailed Reed Finch Donacospiza albifrons. Distinct symbols indicate distinct population groups as delimited in the main text. Component loadings are indicated between parentheses along the axis.
FIGURE 3 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 3. Color variation in the Long-tailed Reed Finch Donacospiza albifrons due to age and feather abrasion. From left to right: AMNH 321449 (new definitive basic plumage); AMNH 322059 (slightly abraded definitive basic plumage); AMNH 388281 (very abraded definitive basic plumage); AMNH 519693 (new first basic plumage); and AMNH 388282 (abraded juvenal plumage, molting to the first basic plumage). All specimens were collected in the southern range of the species.
FIGURE 2 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 2. Typical habitat of the Long-tailed Reed Finch Donacospiza albifrons at the northern portion of its range (Southeastern Brazil Highlands), in the Parque Estadual do Rola Moça, municipality of Brumadinho, Minas Gerais, Brazil (20°03'33''S, 44°00'26''W, 1400 m asl). The species inhabits the drier and higher areas of the park.
FIGURE 1 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 1. Map showing the collection sites of the specimens of the Long-tailed Reed Finch Donacospiza albifrons examined in this study. The dashed line indicates the range of the species according to BirdLife International & Handbook of the Birds of the World (2016).
FIGURE 6 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 6. Box plot comparisons between measurements of the five groups of the Long-tailed Reed Finch Donacopspiza albifrons delimited here (see text). Boxes show the median line and the 25th and 75th percentiles; bars show the non-outlier range of variation. Sample sizes are: RP—Río de la Plata (25♂, 18♀); SB—Southern Brazil (9♂, 8♀); SU—Southeastern Brazil Uplands (8♂, 4♀); SH—Southeastern Brazil Highlands (10♂, 8♀); and LM—Llanos de Moxos (3♂, 1♀).
FIGURE 4 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 4. Geographic variation in coloration of definitive basic plumaged specimens of the Long-tailed Reed Finch Donacospiza albifrons. All specimens, from left to right, were collected in the following Brazilian states: DZUFMG 6286— Minas Gerais; MZUSP 78041—São Paulo; MZUSP 28940—São Paulo; MZUSP 2640—São Paulo; MZUSP 19941—São Paulo; MZUSP 2625—São Paulo; MZUP 6915—Paraná; and MZUSP 38792—Rio Grande do Sul. Note the clinal variation in plumage coloration, with northern birds paler and almost unstreaked on the upperparts (left), and with southern birds markedly buff and streaked on the upperparts (right).
FIGURE 5 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 5. Color variation in the definitive basic plumage of the Long-tailed Reed Finch Donacospiza albifrons. From left to right: LSUMZ 60674—Buenos Aires, Argentina (new plumage); LSUMZ 124923—El Beni, Bolivia (new plumage); LSUMZ 124921—El Beni, Bolivia (abraded plumage); and LSUMZ 63122—São Paulo, Brazil (abraded plumage).
FIGURE 8 in Morphological variation of the Long-tailed Reed Finch Donacospiza albifrons (Vieillot, 1817) (Aves: Thraupidae)
FIGURE 8. Correlation between body size (measured as the first Principal Component scores) and average mean annual temperature of the collection site of specimens of the Long-tailed Reed Finch Donacospiza albifrons examined in this study. Component loadings for males are as follow: wing -0.826, tail -0.36, culmen -0.764, and tarsus -0.771, with a contribution ratio of 49.8%. Component loadings for females are as follow: wing -0.865, tail -0.667, culmen -0.804, and tarsus -0.791, with a contribution ratio of 61.6%.
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