Change: Oppel, S., Schaefer, H. M. and Schmidt, V. 2003. Description of the nest, eggs, and breeding behavior of the endangered Pale-headed Brush-Finch (Atlapetes pallidiceps) in Ecuador. Wilson Bulletin 115: 360-366.Oppel, S., Schaefer, H. M., Schmidt, V., Schröder, B. 2004a. Habitat selection by the Pale-headed brush-finch (Atlapetes pallidiceps)   View changes from previous version. (Word count: 306)  View all updates.

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 61)  View all updates.

Change: with botfly larvae, sometimes heavily so. Infested young appear to grow and fledge normally, without noticeable delay.Botfly parasitism has not stopped the Pale-headed Brush-Finch population from increasing markedly after cowbird control began.Photo by Mery Juiña Photo by Martin Schaefer   View changes from previous version. (Word count: 61)  View all updates.

Change: the young, usually all of them, are infested with botfly larvae.larvae, sometimes heavily so. ThisInfested individualyoung (agrow cowbird)and isfledge particularlynormally, heavilywithout infested.noticeable delay.Botfly parasitism has not stopped the Pale-headed Brush-Finch population from increasing markedly after cowbird control began.Photo   View changes from previous version. (Word count: 59)  View all updates.

Change: black plumage, one (rare)(rare, not shown on photo) with uniform pale underparts.96 cowbird stomachs from Yunguilla contained corn (65%), ticks (Ixodes) (34%), insects (18%), seeds (14%) and blackberries (Rubus sp.) (3%).Photos by Aldo Fernando SornozaPhoto by Niels KrabbePhoto by Aldo Fernando Sornoza   View changes from previous version. (Word count: 304)  View all updates.

Change: birds, virtually any open-nest passerine species within its range.All cowbirds collected at Yunguilla are weighed, sexed, investigated for stomach contents, and carefully prepared as study skins. See attached file below (cowbird data.xls) for details. 96 cowbird stomachs from Yunguilla contained corn (65%),   View changes from previous version. (Word count: 275)  View all updates.

Change: A reserve to protect it was established, and protective measures have proven highly successful. The population has more than quadrupled, from 20-25 occupied territories in 1999 to 104113 territories in 2008.2009.Protective measures include improvement of habitat and control of the parasitic Shiny Cowbird (Molothrus bonariensis).   View changes from previous version. (Word count: 99)  View all updates.

Change: of the vocalsong period (March), except for 1999 and 2000 when it was monitored in February and May, and in April, respectively. Cowbird parasitism on Atlapetes pallidiceps was first noted by Krabbe and coworkers in 1999   View changes from previous version. (Word count: 266)  View all updates.

Change: Renamed from Cowbird control by NKKrabbe Jan 31 2009, 3:52 PM EST for: Rename  View all updates.

Change: This site gives up-to-date information on the Pale-headed Brush-Finch (Atlapetes pallidiceps) and presents primary data too large for publishing in journals.Click the navigation panel on the left.Site created and maintained by Niels Krabbe (nkkrabbe@snm.ku.dk).Photo by Aldo Fernando Sornoza   View changes from previous version. (Word count: 48)  View all updates.