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canberrabirds
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canberrabirds
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| To: | COG List <> |
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| Subject: | Cumulative GBS species |
| From: | Martin Butterfield <> |
| Date: | Mon, 30 Oct 2017 01:39:42 +0000 |
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One of my small games with my GBS records is to track the cumulative number of species seen GBS-year to date.
This year started off slowly and fell further behind the 10 year average until it was nearly 9 species behind by early September. Since then the additional species have poured in and I'm
now 2 species ahead of the average (with lots of previously seen species to add).
I have graphed the two series starting with week (starting week 32 to avoid any complications caused by variations in the timing and duration of our Winter absences).
 I usually end up with 75 - 80 species for a year. This year with an ounce of luck, a pound of axle grease and reasonable rainfall I could expect as many as 85 species. Martin Butterfield
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