Date: 5/12/19 8:45 am From: Paul Plotnick via CTBirds <ctbirds...> Subject: Re: [CT Birds] Eli Whitney mystery warbler and confusing age terminology
The problem arises because most of the guidebooks only show adult or perhaps typical juvenal plumage. I once saw a coppery colored bird at High Island, TX that a native told me was a young female Summer Tanager. There was nothing like it in any guidebook. Only last year I finally saw the same colored Tanager online (along with other immature Summer Tanagers with varying colors). I've also seen and photographed a Laughing Gull in Florida with bright orange bill, legs and feet. I can email a picture to anyone who would like to see it. I thought I had something really rare. You won't find that one in any book either but others have seen similar Laughing Gulls in Florida.
On Sun, May 12, 2019 at 11:23 AM C Wood via CTBirds < <ctbirds...> wrote:
> Helpful explanations, David. For anyone interested in delving into this > terminology challenge, here’s a link to a comprehensive article from 2000: > Plumage and Molt Terminologyhttps:// > sora.unm.edu/sites/default/.../27-43%20OB%20Vol%2018%231%20Apr2000.p… < > https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=12&cad=rja&uact=8&ved=2ahUKEwiOqta2pZbiAhUJ-6wKHdmnAL4QFjALegQIAhAC&url=https%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2F27-43%2520OB%2520Vol%252018%25231%2520Apr2000.pdf&usg=AOvVaw30glN9aE53DSggjkupEZpM > > > > Chris Wood > Woodbury, CT > 203 558-0654 > > Flickr: C.S.Wood-Photos <https://www.flickr.com/photos/cswood-photos/> > Blog: WoodWarbling <http://cswood022.blogspot.com/?m=0> > > > > On May 12, 2019, at 11:02 AM, Spector, David (Biology) via CTBirds < > <ctbirds...> wrote: > > > > There is a lot of confusion in ageing terminology, which is reflected in > people identifying the mystery male American Redstart as "first year" or > "second year," meaning the same thing. > > > > As with a few other male song birds (e.g., Red-winged Blackbird), male > American Redstarts take a bit over a year to reach full ("definitive") male > plumage, with variation among individual males in the first year of life > (some looking more "female-like" and others looking more "male-like"). > > > > The bird in question is roughly 11 months old. He is in his first > breeding season (thus the label "first year") and in its second calendar > year (thus the label "second year," or "SY"). If everything goes well for > this bird he will molt into his definitive adult male plumage at the end of > this breeding season, and by the fall migration (when it will be roughly 15 > months old) he will probably be indistinguishable from older males. > Although it takes a little over a year to grow full adult plumage, a male > does not appear in breeding season in adult plumage until he is nearly two > years old (in his third calendar year--thus the impression that it takes > three years to appear adult). > > > > The word "yearling" for such individuals might reduce confusion. > > > > David > > > > David Spector > > Belchertown, Massachusetts > > > > P.S. Feather generation terminology adds another level of potential > confusion. The bird in question probably has two or three generations of > feathers. The primaries, secondaries, tail feathers, and primary coverts > are probably "juvenal" (or "juvenile"), most of the rest of the feathers > are probably "first basic" (or "formative"), and some feathers might be > "first alternate." > > _______________________________________________ > > This list is provided by the Connecticut Ornithological Association > (COA) for the discussion of birds and birding in Connecticut. > > For subscription information visit > http://lists.ctbirding.org/mailman/listinfo/ctbirds_lists.ctbirding.org > > _______________________________________________ > This list is provided by the Connecticut Ornithological Association (COA) > for the discussion of birds and birding in Connecticut. > For subscription information visit > http://lists.ctbirding.org/mailman/listinfo/ctbirds_lists.ctbirding.org > _______________________________________________ This list is provided by the Connecticut Ornithological Association (COA) for the discussion of birds and birding in Connecticut. For subscription information visit http://lists.ctbirding.org/mailman/listinfo/ctbirds_lists.ctbirding.org