Mindy-
My analysis of 14 years' worth of spring migration data for Magee Marsh
Wildlife Area indicates that to maximize both warbler count and total
species count, the optimal time to bird there is May 10-11. May 17
stands out as a date nearly as good. See
http://www.umich.edu/~bbowman/birds/se_mich/mi_bird.html#stats
But, really, you shouldn't expect there to be any great difference
between the weekends of May 1-2, May 8-9, and May 15-16. Between the
May 1-2 weekend and the May 15-16 weekend, though, I would choose the May
15-16 because you will see more warbler species then--19 average per day
vs. 14 average per day. See the table below.
Total no. No. of
of species warbler species
May 1 63 14
May 2 60 14
Average 1-2 62 14
May 8 60 15
May 9 67 17
Average 8-9 64 16
May 15 60 19
May 16 62 19
Average 15-16 61 19
The above results are based on 111 spring migration birding trips to
Magee Marsh.
Bruce Bowman
Ann Arbor, Michigan
Date sent: Wed, 13 Jan 2010 07:58:54 -0500
Send reply to: "Billingham, Mindy F." <[log in to unmask]>
From: "Billingham, Mindy F." <[log in to unmask]>
Subject: [Ohio-birds] Magee Marsh in May
To: [log in to unmask]
> Hello-
>
>
>
> I am hoping to head up to Magee Marsh in May for the big spring
> migration. I had heard that the weekend of the 8th is the best but I
> won't be able to make it then. I am trying to decide between the weekend
> before and the weekend after. Does anyone have recommendations as to which
> one is better? Is one better then the other?
>
>
>
> Thanks in advance!
>
> Mindy
>
>
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