. Bulletin. Science; Natural history; Natural history. 124 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. X E- o z j ; i i i 1 I I ; i i i i l ] T " I 1 ; [ 1 ; ~> 1 - BDEP i i i 1 ! 1 31°30' ST25 30 00 ER26 23 30 LP31 27 00 SI29 34 00 LA23 25 00 MA30 29 30 BG27 28 30 PP28 32 30 SD24 34° 00' LA23 23 30 LP31 31 30 ST25 25 00 MA30 28 30 PP28 32 30 SD24 30 00 ER26 27 00 SI29 29 30 BG27 Fig. 5. 7 (BLEN) 22 24 26 28 30 32 34 36 LATITUDE (°N) Examples of geographic variation in characters included in Clusters 4 (BWID, BDEP), and See legend to Figure 2 for furthe
. Bulletin. Science; Natural history; Natural history. 124 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. X E- o z j ; i i i 1 I I ; i i i i l ] T " I 1 ; [ 1 ; ~> 1 - BDEP i i i 1 ! 1 31°30' ST25 30 00 ER26 23 30 LP31 27 00 SI29 34 00 LA23 25 00 MA30 29 30 BG27 28 30 PP28 32 30 SD24 34° 00' LA23 23 30 LP31 31 30 ST25 25 00 MA30 28 30 PP28 32 30 SD24 30 00 ER26 27 00 SI29 29 30 BG27 Fig. 5. 7 (BLEN) 22 24 26 28 30 32 34 36 LATITUDE (°N) Examples of geographic variation in characters included in Clusters 4 (BWID, BDEP), and See legend to Figure 2 for further explanation. showed a markedly different cluster configuration than that derived from the multi-species analysis shown in Atwood (1988: 53). To further examine the bases of these broad clustering patterns, for each char- acter I compared differences between adjacent sample regions (Table 2). Eighteen of 31 characters were significantly different (P < , ANOVA) between Northern (north of 30°N latitude) and Central (30°N south to 24°N latitude) regions; included were most measurements of breast and back coloration, the amount of white present on rectrices 5 and 6, tail length, bill width and depth, and combined lengths of the tarsus and middle toe. Comparisons of samples from Central and Southern (south of 24°N) sections of Baja California showed significant differences in 15 characters, including measurements of wing length, bill width and depth, and the amount of white present on rectrices 5 and 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 Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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