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Re: Check out late hummingbirds, photos - addendum

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  • tfallsjim
    Forgot Ruby-throated, which I do not expect to see in W MT - Jim
    Message 1 of 3 , Sep 5, 2012
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      Forgot Ruby-throated, which I do not expect to see in W MT - Jim

      --- In MOB-Montana@yahoogroups.com, "tfallsjim" <tfallsjim@...> wrote:
      >
      > I lived "among" Anna's for 30 years, and never saw pale orange on flanks (especially near base of leg). Black-chinned, especially in fall, show this feature, as depicted in my photos. That and tail wag (or pumping as called for in some field guides) seem to me to be definitive for separating the two - there are other features one can see in high-speed stills such as rounded white in tail tips (ANHU) versus sharper-tipped (BCHU) as well as number of tail feathers and percentage of tail feather tips with white... I hope this is useful to those who love to see and photograph hummers, especially in fall when one can never know what might show up at a feeder. Finally, BCHU tend to nest later in season (in CA, for example) than ANHU - the latter re-starting the next season as early as December, but having finished the "current" year by the middle of June at the latest. So, if one sees a young-looking hummingbird in late August or September in MT, it is MOST likely Black-chinned (if not Calliope or Rufous - not to denigrate the few Broad-tailed). Any other SMALL "white and green" hummingbird could be Costa's... but not likely - Jim, T Falls
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      > --- In MOB-Montana@yahoogroups.com, "tfallsjim" <tfallsjim@> wrote:
      > >
      > > From now through October, one may encounter hummingbirds anywhere in Montana. I've posted a few identified photos of Black-chinned (made in Thompson Falls MT - probable juvenile, sex undetermined by me) and Anna's (made in San Rafael CA last Sept of a female) for comparison, showing definitively what to look for in Anna's before doing like I did once, thinking a short-billed Black-chinned at my feeder on 29 August 2010 was Anna's - note especially in the blurred photo from video the nearly 90 degree (overall) tail wag of Black-chinned. Also, black-chinned appear to be vertical when hovering, Anna's appear closer to horizontal. Look also under tail for darker, browner coverts of Anna's. Good luck and try to get photos when you can - Jim, Thompson Falls
      > >
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