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Hi Carmel and All,
I made a graph comparing this year with last year. You can see it here: =
http://www.johnfkearney.com/ESW/Images/2016vs2015.png.=20
Overall, the trends look similar. There were more calls in mid-August =
last year, but I believe they started earlier this year. Last night we =
had a peak that is 7 days earlier than the peak last year. We still =
might see another peak in the next week of so. If you have a question =
about any particular species, I would be glad to graph that for you.
John
=20
=20
From: naturens-owner@chebucto.ns.ca =
[mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Carmel Smith
Sent: September-10-16 11:47
To: naturens@chebucto.ns.ca
Subject: Re: [NatureNS] Nocturnal Migration for the 1st Week of =
September
=20
Hi John,=20
=20
I am wondering what your data is showing regarding this year's migration =
as opposed to last year? In general trends. Are there more birds leaving =
earlier? Or is it about the same? I am not seeing many migrants here =
yet, and I wonder if those who usually hit my patch are late or early?! =
Or have they changed their patterns in terms of route... Not sure why, =
but there seems to be a change from my limited viewpoint and =
information. So I'm curious if you are seeing differences.
Carmel Smith
Midville Branch
=20
On Friday, September 9, 2016 6:15 PM, John Kearney =
<john.kearney@ns.sympatico.ca <mailto:john.kearney@ns.sympatico.ca> > =
wrote:
=20
Hi All,
It was a busy week for nocturnal migration at Carleton, Yarmouth County. =
There was a total of 1,383 calls at a rate of 198 calls per night. There =
was an estimated minimum of 1,117 birds. Warbler composition fell to 79% =
of calls due to the influx of Swainson=E2=80=99s Thrushes and Veeries. =
The most common birds for the week were Common Yellowthroat (190), =
American Redstart (160), Magnolia Warbler (152), Northern Parula (125), =
Black-and-White Warbler (116), Swainson=E2=80=99s Thrush (88), and =
Black-throated Green Warbler (64). There was a more than average flight =
of Wilson=E2=80=99s Warbler, with 37 flight calls recorded. The peak for =
the week and for the autumn season thus far was the night of 2-3 =
September when 469 calls were recorded. Rare birds for the week included =
4 Prairie Warblers, 2 Pine Warblers and 1 Indigo Bunting. A sparrow =
recorded at 10:22 pm on 6 September was a possible Seaside Sparrow. A =
discussion of this flight call can be found on at my website at =
http://www.johnfkearney.com/SESP.html. Additional graphics of the autumn =
nocturnal migration at Carleton can be seen at: =
http://www.johnfkearney.com/Carleton_YarmouthCounty_2016.html. A summary =
list follows.
John
=09
Estimated
=09
Call
Minimum
Species
Count
Individuals*
Common Yellowthroat
190
150
American Redstart
160
124
Magnolia Warbler
152
122
Northern Parula
125
90
Black-and-White Warbler
116
90
Swainson's Thrush
88
58
Black-throated Green Warbler
64
54
Unidentified Warbler
47
43
Wilson's Warbler
37
31
Northern Waterthrush
34
24
Ovenbird
34
29
Chestnut-sided Warbler
32
27
Blackpoll Warbler
31
30
Black-throated Blue Warbler
31
29
Unidentified Warbler Genus Setophaga
30
28
Cape May Warbler
27
22
Yellow-rumped Warbler
27
24
Yellow Warbler
16
15
Unidentified Songbird
14
12
Savannah Sparrow
14
12
White-throated Sparrow
14
10
Unidentified Warbler Genus Oreothlypis
13
12
Palm Warbler
12
12
Veery
11
8
Lincoln's/Swamp Sparrow
10
8
Nashville Warbler
10
6
Blackburnian Warbler
9
7
Bay-breasted Warbler
7
16
Unidentified Sparrow
6
6
Mourning Warbler
6
5
Prairie Warbler
5
4
Solitary Sandpiper
3
1
Canada Warbler
2
2
Pine Warbler
2
2
Indigo Bunting
1
1
Rose-breasted Grosbeak
1
1
Seaside Sparrow
1
1
Tennessee Warbler
1
1
Total
1,383
1,117
* 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
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