Acorn woodpecker species accounts, v4449
Page 115
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
1990 WaltwD Koenig Melanerpes fomivivorus Westgate HNHR (5 April) 813. 2 birds grapled to The ground. 823. ♀1595 for sure. Also ⚪♂ or at least? ⚪♂ M/LG #1693 from BLMI! 925. I t say we're up to at least 15 birds. 827. ⚪♀NOBA. Could be a ♂-power struggle after all, even though there are several intruding ♀♀ here. 833. ⚪NOBA mounting-and then being reverse mounted-by a ♀1595. 836. ⚪whKB-wh#1558 from Road Warrior (I got)! 839. Yel! Yel? (seen well). Maybe Yel/Yel? 905. There's a coalition of 2 or maybe 3 ♀NOBA here. Looks like they may be in rather tight with ♂1742. The 2 ♀♀, esp. ♀1571, are most prominent here. Intruders are of both sexes. Maybe started as a ♂ power struggle and attracting these additional ♀♀? No sign of ⚪1106 or ⚪1313 in any case. But there are definitely NOBAs of both sexes. ? 915. ⚪Mv/Yel? (did not see both legs at once. Could be 2 birds: ♂ Mv/Yel & ♂ BIK/Yel.) → No: ♂ Mv/Yel #1585 (1988 baby-last seen 934. Think I finally got ♀ DB-BLK? ♂1741. 2 yes. spring 1989) 943. ⚪Mv-:LB-wh ♂ ? BLK-DB/BLK-or ♂1741 1013. ♂ CB-Yel/or #1595 (Pipitina). 1015. Leaving. Power struggle activity still strong. My best guess is 12-15 birds involved, including several NOBAs (both♂&♀). However, it only makes sense that the root of it all is as a replacement for the breeder ⚪8, who both appear to be gone. The 2 breeder ♀♀ + ♂1741 should be able to handle things, however. 1020. I more: ? wh-Red/Yel ♂1609 from 150D! 1425. Things have slowed down a lot.