[wisb] Re: Fwd: [mou-net] Red Crossbill invasion- Duluth
- From: Ryan Brady <ryanbrady10@xxxxxxxxxxx>
- To: <wisbirdn@xxxxxxxxxxxxx>
- Date: Thu, 30 Aug 2012 09:00:03 -0600
A fair number of reports in the past week have been eBirded. As linked in the
WI eBird page story posted last week, the most updated distribution map (for
August only) can be seen at:
http://tinyurl.com/recraug2012
Zoom in, check the box "Show Points Sooner" on the right side, and then click
the red markers to see details of recent sightings.
Surely there are many birds in the underbirded north and moving along the Great
Lakes shorelines. Knowing overhead flight call is key. Stationary counts at
known passerine concentration points will likely yield highest detection rates.
Ryan Brady
Washburn, Bayfield County, WI
http://www.pbase.com/rbrady
----------------------------------------
> Date: Thu, 30 Aug 2012 09:29:18 -0500
> Subject: [wisb] Fwd: [mou-net] Red Crossbill invasion- Duluth
> From: calocitta8@xxxxxxxxx
> To: wisbirdn@xxxxxxxxxxxxx
>
> Hey all-
> I thought I would forward this on - some of these birds must be entering
> Wisconsin, but I haven't seen reports of late. Anyone?
>
> Jesse Ellis
> Madison, WI
>
> ---------- Forwarded message ----------
> From: Karl Bardon <karl_bardon@xxxxxxxxx>
> Date: Wed, Aug 29, 2012 at 11:13 PM
> Subject: [mou-net] Red Crossbill invasion- Duluth
> To: MOU-NET@xxxxxxxxxxxxx
>
>
> Thousands of Red Crossbills have been moving through Duluth in an
> unprecedented invasion. I began counting migrant raptors and non-raptors in
> Duluth (for Hawk Ridge Bird Observatory) on August 14th, and have now
> counted a total of 3748 Red Crossbills! This irruption is unusual not just
> in overall numbers, but also in timing, since most previous high counts of
> Red Crossbills in Minnesota have been in late fall and winter. Previous
> high counts include 215 at Hawk Ridge on 22 October 1988 (Nicoletti, The
> Loon 71:100), 205 at the Lakewood pumping station in Duluth on 12 October
> 1994 (Eckert, The Loon 67:47-49 ), 125 in Cook County on 13 January 1968
> (Scherer, The Loon 40:47), and 106 on the Isabella CBC on 1 January 2006.
> By comparison, high counts this season have been 365 on 18 August, 603 on
> 23 August, 1252 on 24 August, and 705 on 25 August. I didn’t think Red
> Crossbill counts like this were even possible in Minnesota! Prior to this
> season, my counts
> at Hawk Ridge/Lester River (during the last five seasons) have averaged
> only 179 birds, with a peak of only 56. For the most part, the Red
> Crossbills this August have been moving through in very large flocks, with
> up to 160 birds in one flock. For example, the 1252 birds recorded on 24
> August included only 23 flocks (with an average flock size of 54). The
> majority of these birds appear to favor moving directly along the shore of
> Lake Superior (as counted from the Lester River condo count site) as
> opposed to higher up on the ridge (including several simultaneous morning
> counts from the Hawk Ridge main overlook count site). Some of these
> crossbills have landed to feed on the spruce cones in the Lakeside
> neighborhood, where I have seen them to be a small-billed type, perhaps
> type 3, but for the most part the vast majority of these birds have just
> continued south without stopping. Where did all these crossbills come from,
> where are they going, and why are
> they moving?
> Karl Bardon
> Duluth, MN
>
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>
>
> --
> Jesse Ellis
> Post-doctoral Researcher
> Dept. of Zoology
> University of Wisconsin - Madison
> Madison, Dane Co, WI
>
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