[NatureNS] Re: Black & White Warbler

From: "Lance Laviolette" <corvuscorax@sympatico.ca>
To: <naturens@chebucto.ns.ca>
References: <BAY114-W42D66B1F1614E58E7003E6B59C0@phx.gbl>
Date: Sun, 29 Jun 2008 13:56:16 -0400
Precedence: bulk
Return-Path: <naturens-mml-owner@chebucto.ns.ca>
Original-Recipient: rfc822;"| (cd /csuite/info/Environment/FNSN/MList; /csuite/lib/arch2html)"

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James Hirtle wrote:

>This is interesting to me as in all of the times that I have watched=20
>this species I've never considered if there was a way to tell the=20
>male or female apart before.

James, it is actually fairly straight forward to separate male and =
female Black-and-white Warblers while they are in alternate (breeding) =
plumage in the early part of the summer (when they first appear in NS to =
about now). In addition to the white throat you mentioned, females have =
white chins, indistinct streaking on the sides of their bellies and =
their auricular (cheek) area is greyish or whitish. Males have a black =
or blackish chin, throat and auricular area and bold, black streaking =
along the sides of their bellies.

Keep in mind though that once young Black-and-white Warblers fledge from =
the nest, young males can be very similar in appearance to females so it =
becomes more difficult to separate the sexes. It can still be done using =
a combination of tail feather shape, the amount of white in the tail, =
side streaking and the suggestion of black, in some young males, in the =
areas where it is normally found in adults. Certainly a difficult task =
when looking at a moving bird through binoculars.

All the best,

Lance
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Lance Laviolette
Glen Robertson, Ontario
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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charset=3Diso-8859-1">
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<BODY class=3Dhmmessage bgColor=3D#ffffff>
<DIV><FONT face=3DArial>James Hirtle wrote:</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial>&gt;This is interesting to me as in all of =
the&nbsp;times=20
that I have watched </FONT></DIV>
<DIV><FONT face=3DArial>&gt;this species I've never considered if there =
was a way=20
to tell the </FONT></DIV>
<DIV><FONT face=3DArial>&gt;male or female apart before.</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial>James, it is actually fairly straight forward to =
separate=20
male and female Black-and-white Warblers while they are in alternate =
(breeding)=20
plumage in the early part of the summer (when they first appear in NS to =
about=20
now). In addition to the white throat you mentioned, females have white =
chins,=20
indistinct streaking on the sides of their bellies and their auricular =
(cheek)=20
area is greyish or whitish. Males have a black or blackish chin, throat =
and=20
auricular area and bold, black streaking along the sides of their=20
bellies.</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial>Keep in mind though that once young =
Black-and-white=20
Warblers fledge from the nest, young males&nbsp;can be&nbsp;very similar =
in=20
appearance to females so it becomes more difficult to separate the =
sexes. It can=20
still be done using a combination of tail feather shape, the amount of =
white in=20
the tail, side streaking and the suggestion of black, in some young =
males, in=20
the areas where it is normally found in adults. Certainly a difficult =
task when=20
looking at a moving bird through binoculars.</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial>All the best,</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial>Lance</FONT></DIV>
<DIV><FONT =
face=3DArial>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
<BR>Lance Laviolette<BR>Glen=20
Robertson, =
Ontario<BR>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</=
FONT></DIV></BODY></HTML>

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