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  1. RE: [LACoBirds] Continuing Brant, Pacific Loon, Willow Flycatcher & more (San Pedro) LINK
    DATE: May 29, 2018, 5 month(s) ago
    David, Your questions about the identity of the white-eyes that are increasingly well-established in Orange and se. Los Angeles Counties are valid ones. Bear in mind
    that Japanese White-eyes (Zosterops japonicus) are geographically quite variable, and I wouldnt doubt that there is some geographical variation in vocalizations as well. Our birds seem to match most closely Japanese White-eyes from mainland China (Z. j. simplex);
    these are not the ones that are in Japan or established on the Hawaiian Islands. But some subspecies of Oriental White-eye (Z. palpebrosus) are closely similar in appearance to some Japanese White-eyes, and youre correct to have some skepticism regarding
    the species identification of our birds. We hope this can be resolved soon we have one specimen here at the Natural History Museum (salvaged from Orange County), and our colleagues at the Moore Laboratory of Zoology are hoping to have the results of their
    DNA analysis of that specimen soon. If you or anybody run across a dead or moribund white-eye, please make certain it gets to us to help document our incipient populations. To my ear the calls Ive heard from white-eyes in Orange County and in Long Beach seem to match fairly closely some of the calls of Japanese White-eye available
    on Xeno-Canto. Unfortunately, recordings of Oriental White-eyes on Xeno-Canto are not available on the web site. As Xeno-Canto explains, Some species
    are under extreme pressure due to trapping or harassment. The open availability of high-quality recordings of these species can make the problems even worse. For this reason, streaming and downloading of these recordings is disabled. We have been validating eBird entries of Japanese White-eye from southern California in order to establish that as the working hypothesis regarding
    identification. If youre searching for white-eye sightings, search on that species but also on Zosterops sp. (white-eye sp.), since many observers understandably are only comfortable entering sightings at that level of certainty. Bottom line: get recordings,
    and get specimens, and well be able to figure out for certain what we have. Kimball
    Kimball L. Garrett Ornithology Collections Manager Natural History Museum of Los Angeles County 900 Exposition Blvd. Los Angeles, CA 90007 USA (213) 763-3368 kgarrett@...
    From: []
    On Behalf Of David Ellsworth davidells@... [LACoBirds]
    Sent: Tuesday, May 29, 2018 8:19 AM
    To: LACoBirds
    Subject: Re: [LACoBirds] Continuing Brant, Pacific Loon, Willow Flycatcher & more (San Pedro)
    Secondly, I wanted to add that of all the Japanese White-eye audio samples on , the only ones that actually sounded like ours here were two recordings made in Orange County. None of the recordings made in Japan sounded like ours. I am inclined to believe that the identification of Japanese
    White-eye is incorrect, and they're in fact some other species of White-eye (or at least, a subspecies of Japanese White-eye that is vastly under-represented on xeno-canto); the call sounds like an innate call, which wouldn't need to be learned, so captive-raised
    birds should do the same calls as wild ones in their native habitat, right
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