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Hi Carmel and all,
Common Yellowthroat is an interesting example. You will see that it is =
not on my list for this week. I should be picking them up overhead =
somewhat regularly by the end of August, a peak in mid-September, and =
stragglers continuing to mid-October. Some of the early migrating =
warblers like American Redstart do have a long journey but so does one =
of our latest migrating warblers, the Blackpoll Warbler. Each warbler =
species seems to have a specific migration strategy.
Thanks so much for your interest!
John=20
=20
From: naturens-owner@chebucto.ns.ca =
[mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Carmel Smith
Sent: August-08-16 13:38
To: naturens@chebucto.ns.ca
Subject: Re: [NatureNS] Nocturnal Migration for the 1st Week of August
=20
John,=20
I am a bit amazed at the numbers of departing warblers already. =
Interesting in that I have a nest here on the property with just-hatched =
Common Yellowthroat!=20
=20
Are the early departures those who have the longest voyage? i.e. their =
wintering grounds are the farthest from here? Lots of questions, I am =
sure more answers will be available as we are more able to monitor =
migration through various means. What you are doing is a nice lens on =
the situation, I always find it fascinating! Keep up the good work.
=20
Carmel Smith
Midville Branch, NS
=20
On Monday, August 8, 2016 12:20 PM, John Kearney =
<john.kearney@ns.sympatico.ca <mailto:john.kearney@ns.sympatico.ca> > =
wrote:
=20
Hi All,
The rate of nocturnal movements of warblers at Carleton, Yarmouth =
County, almost doubled over the previous week. There was a total of 240 =
calls and at least 181 individual birds at a rate of 34 calls per night. =
Warblers composed 99% of the calls recorded. Despite a continuing =
variety in species composition, early migrating warbler species =
dominated the count. The most common species were American Redstart (69 =
calls), Black-and-White Warbler (45 calls), and Yellow Warbler (34 =
calls). The numbers of these three species seemed to indicate true, =
south-bound migration, rather than post-breeding dispersion. A summary =
list can be found below.
The weather radars in the state of Maine, at Caribou and Portland, =
showed only light activity but with evidence of bird migration on most =
nights when there was no rain. This, and previous reports, are posted =
at: http://www.johnfkearney.com/Carleton_YarmouthCounty_2016.html.=20
John
=20
=09
Estimated
=09
Call
Minimum
Species
Count
Individuals*
American Redstart
69
45
Black-and-White Warbler
45
32
Yellow Warbler
34
28
Unidentified Warbler
18
15
Chestnut-sided Warbler
13
10
Magnolia Warbler
10
9
Northern Parula
10
7
Blackburnian Warbler
9
8
Black-throated Blue Warbler
9
7
Unidentified Warbler Genus Setophaga
7
6
Tennessee Warbler
6
4
Canada Warbler
3
3
White-throated Sparrow
3
3
Bay-breasted Warbler
1
1
Black-throated Green Warbler
1
1
Cape May Warbler
1
1
Northern Waterthrush
1
1
Total
240
181
=20
* Calls that are more than one minute apart plus calls that are less =
than one minute apart divided by three and rounded up to nearest whole =
number
=20
--------------------
John F. Kearney
120 White=E2=80=99s River Road
Carleton, Nova Scotia
CANADA B5A 5R2
=20
=20
=20
=20
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