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Index of Subjects Thanks, Don, for bringing that id feature to our attention. I remember Fulton mentioning that too. This identifying mark is especially useful in completing rare bird reports. The reviewer either thinks you are far more learned than him/her or figures you are somewhat short of a brick; in either case you will not receive any of those (nasty) followups asking for more details!! Angus At 02:35 PM 13/01/2010, you wrote: >I heard Fulton mention a theory that the suborphium of the upper plenicidae >is longer on a Cooper's than a Sharp-shinned... or something like that. > >Don > >Don MacNeill >donmacneill@eastlink.ca >----- Original Message ----- >From: <iamclar@DAL.CA> >To: <naturens@chebucto.ns.ca> >Sent: Wednesday, January 13, 2010 1:31 PM >Subject: Re: [NatureNS] ID Assistance request (+ Sharp-shinned vs Cooper's >id) > > >All: > >I thought I'd stay out of this, because the responders have it correct as an >adult Sharp-shinned Hawk, but the lingering concern about Cooper's needs to >be >dispelled. There is nothing about this bird that resembles Cooper's, adults >of >which have a longer head (making the eye seem more forward) often displaying >a >bulging "hackle" at the nape. Also, they are distinctly dark-capped, >contrasting with the pale gray nape. And, BTW, most images taken against a >background sky or snow have the subject underexposed and too dark overall >(and >sometimes washed with cyan or blue), obscuring details. You should brighten >such images in a photo editing program or brighten your screen. Brightening >can lead to colour distortions, so should be used with care, but it's good >for >bringing out contrasts of plumage markings such as barring patterns and a >contrastingly dark cap. > >Richard Stern is right about closed tails being less easy to interpret >than open >ones, but only from above. From below, Cooper's and Sharp-shinned are very >different, and anyone obtaining photos of perched birds for diagnosis should >aim to get shots from below of the tail. (The broader white margin on the >tail >of Cooper's seldom useful, as it can be sullied and worn.) > >Cooper's tails are graduated, with the tail feathers thus from below: > ______ > ____)))) > ______)))) > >Sharp-shinned tails are not, and thus: > _______ > _______) > _______) > > From above, only the longest outer tail feathers are seen, so this is of no >help. > >All best, Ian > >Ian McLaren > >Quoting Peter Payzant <pce@accesswave.ca>: > > > Hi, all- > > > > A friend sent me some photos of a bird in his back yard and asked for > > an ID. I'm very rusty and so I'm appealing to the collective wisdom of > > NatureNS folk for assistance. Here are the photos: > > http://www.pbase.com/ppayzant/id_request[1] . > > > > Thanks > > > > Peter Payzant > > > > > > > > Links: > > ------ > > [1] http://www.pbase.com/ppayzant/id_request > >
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