[CT Birds] Glastonbury
ashippee at snet.net
Sat Mar 2 20:24:09 EST 2013
Well, any one rarity is rare, but to have some member of the group of rarities might be very common.
E.g., let's say 1 bird lands on a post 40% of the time, and 60 other birds land there, 1% each. Any one of those rarities would be rare -- but a rarity would be there well over half the time. If you had to bet *on* one bird, bet on the 40%, but if you could bet *against* a bird, bet against the 40%.
So, I can imagine being surprised at the lack of any from the class of rarities. Even though the presence of any particular one would be a surprise, the lack of any of the class could also be a surprise.
Statistics is a strange field.
On Mar 2, 2013, at 7:48 PM, Mark Szantyr wrote:
> Isn't that why they are called rarities?
> On Mar 2, 2013, at 7:26 PM, Bill Asteriades <bill.asteriades at gmail.com> wrote:
>> Nice push of birds inland this past week. I had 28 species on a walk in
>> Glastonbury last week vs. 40 today. Best birds today were 5 Northern
>> Pintails. Also, had at least 10,000 Canada Geese in the CT river and
>> feeding in the corn fields, spread over a distance of a mile or so. Quite
>> surprised there were no rarities.
>> Bill Asteriades
>> South Glastonbury, CT
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> This list is provided by the Connecticut Ornithological Association (COA) for the discussion of birds and birding in Connecticut.
> For subscription information visit http://lists.ctbirding.org/mailman/listinfo/ctbirds_lists.ctbirding.org
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