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31 results for “Emberizidae”
FIGURE 6 in Plumage variability and taxonomy of the Capped Seedeater Sporophila bouvreuil (Aves: Passeriformes: Emberizidae)
FIGURE 6. Ventral view of adult male Sporophila bouvreuil in the Moji das Cruzes and São Paulo regions (attributed to S. b. saturata) and S. m. minuta, showing color variation that is most likely due to age rather than phylogeny (specimen series from the MZUSP).
FIGURE 7. A in Plumage variability and taxonomy of the Capped Seedeater Sporophila bouvreuil (Aves: Passeriformes: Emberizidae)
FIGURE 7. A: A male captured and color-banded near Moji das Cruzes, São Paulo, on 16 November 2006, and B: the same individual on 12 January 2008. Note the color change.
FIGURE 3 in Plumage variability and taxonomy of the Capped Seedeater Sporophila bouvreuil (Aves: Passeriformes: Emberizidae)
FIGURE 3. Dorsal view of adult males of the Sporophila bouvreuil complex (specimen series from the MZUSP).
FIGURE 5 in Plumage variability and taxonomy of the Capped Seedeater Sporophila bouvreuil (Aves: Passeriformes: Emberizidae)
FIGURE 5. Geographic distribution of Sporophila bouvreuil (yellow triangles) and Sporophila pileata (blue circles) based on specimens, literature and field work. Inset: area of sympatry in the states of Minas Gerais (MG) and São Paulo (SP).
FIGURE 4 in Plumage variability and taxonomy of the Capped Seedeater Sporophila bouvreuil (Aves: Passeriformes: Emberizidae)
FIGURE 4. Map illustrating the geographic distribution of the ventral color patterns of adult male birds in the S. bouvreuil complex. Reddish brown ventral coloration is indicated by yellow triangles, light yellowish brown by blue squares, light gray by green triangles, pale brown by green circles, pinkish gray by red circles. The type localities are indicated by the asterisks: 1: S. b. bouvreuil; 2: S. b. crypta; 3: S. b. saturata; 4: S. b. pileata. Note two character groupings: one formed by S. b. pileata in blue, and the other by S. b. bouvreuil, S. b. saturata and S. b. crypta in orange, showing an area of sympatry in the state of São Paulo.
FIGURE 2 in Plumage variability and taxonomy of the Capped Seedeater Sporophila bouvreuil (Aves: Passeriformes: Emberizidae)
FIGURE 2. Ventral view of adult males of the Sporophila bouvreuil complex (specimen series from the MZUSP).
FIGURE 1 in Plumage variability and taxonomy of the Capped Seedeater Sporophila bouvreuil (Aves: Passeriformes: Emberizidae)
FIGURE 1. Scatterplots of morphological variables. Note that all taxonomic units have similar variation in morphology and that none forms a distinct grouping of points.
FIGURES 1–2. 1 Brueelia jacarinae. 1, holotype male. 2 in A new species of Brueelia Kéler, 1936 (Phthiraptera: Ischnocera: Philopteridae) from the blueblack grassquit (Aves: Passeriformes: Emberizidae) in Brazil
FIGURES 1–2. 1 Brueelia jacarinae. 1, holotype male. 2, paratype female.
Data from: Song structure, not high-frequency song content, determines high-frequency auditory sensitivity in nine species of New World sparrows (Passeriformes: Emberizidae)
1. The evolution of vocal signals can be constrained by a host of factors including habitat effects on sound propagation, morphology of sound-producing structures, and phylogenetic relationships among species. Here, we asked whether auditory sensitivity over a broad range of frequencies correlates with the spectral content of conspecific vocalizations, or whether it is constrained by the overall structure of vocalizations, habitat effects on sound propagation, or relatedness among species. 2. We studied nine New World sparrows (Passeriformes: Emberizidae) including three open-habitat species, three scrub-like habitat species, and three forest species. For each habitat, one species had pure trilled songs, another had tonal songs, and another had complex songs with tones, trills, and amplitude-modulated buzzes. 3. As predicted by the acoustic adaptation hypothesis, song spectral properties (specifically frequency and entropy) had the highest values in open-habitat species and the lowest values in forest species. 4. Based on our results from song analyses, and the sender-receiver matching hypothesis, we predicted that open-habitat species would be more sensitive to high-frequency sounds compared to forest species. Contrary to this prediction, habitat and high-frequency song content had little effect on audiogram shape. Song type, however, had a strong effect, with species that produce complex songs showing higher sensitivity to high-frequency sounds than all other species. 5. Our results suggest that the use of song frequency by receivers depends on song structure and not necessarily on song spectral content. Therefore, our current understanding of how signal-processing mechanisms should match signal properties appears to be too simple. When thinking about the evolution of signal-processing mechanisms, the multidimensionality of signals, and how the different dimensions can interact, should be considered.
Data from: Song structure, not high-frequency song content, determines high-frequency auditory sensitivity in nine species of New World sparrows (Passeriformes: Emberizidae)
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Biogeography and diversification of Old World buntings (Aves: Emberizidae): radiation in open habitats
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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