. Bulletin of the British Ornithologists' Club. . Figure 2. Variation in six morphometric characters. Shown are: means, standard errors (boxes) and standard deviations (whiskers). Characters depicted are: BL = bill-length from nostril; BD = bill-depth at nostril; BW = bill-width at nostril; WC = wing-chord; TAIL = tail-length; and TAR = tarsus-length. OGU acronyms refer to those used in Fig. lb. Chlorospingus populations further south, we included an additional OGU consisting of the subspecies C. o. regionalis (CRica), which occurs from northern Nicaragua to central Costa Rica; this OGU was ch


. Bulletin of the British Ornithologists' Club. . Figure 2. Variation in six morphometric characters. Shown are: means, standard errors (boxes) and standard deviations (whiskers). Characters depicted are: BL = bill-length from nostril; BD = bill-depth at nostril; BW = bill-width at nostril; WC = wing-chord; TAIL = tail-length; and TAR = tarsus-length. OGU acronyms refer to those used in Fig. lb. Chlorospingus populations further south, we included an additional OGU consisting of the subspecies C. o. regionalis (CRica), which occurs from northern Nicaragua to central Costa Rica; this OGU was chosen because of the large number of specimens available, and because it is the northernmost of the remaining populations. The geographic positions and abbreviations of OGUs are presented in Fig. lb. Morphometric characters were first evaluated using Pearson's product-moment correlations to detect redundant variables (Zink & Remsen 1986). Normality of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists' Club. London : British Ornithologists' Club


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