Butterfly sighting

David Dieter

Location: Sugar River bike trail north of Brodhead
Green County

Eastern Tiger Swallowtail1

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2022 sightings

Mar 12
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Aug 486
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2021 sightings

Mar 30
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2020 sightings

Mar 12
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2019 sightings

Mar 5
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2018 sightings

Mar 9
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Aug 350
Sep 148
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2017 sightings

Feb 7
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2016 sightings

Feb 2
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2015 sightings

Mar 17
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2014 sightings

Mar 1
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May 258
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Oct 79
Nov 5

2013 sightings

Mar 1
Apr 45
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Aug 223
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Oct 78
Nov 8

2012 sightings

Mar 115
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May 371
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Aug 203
Sep 139
Oct 69
Nov 9
Dec 1

2011 sightings

Mar 4
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May 117
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2010 sightings

Mar 28
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Aug 211
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2009 sightings

Mar 10
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Aug 81
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2008 sightings

Mar 3
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Nov 3

2007 sightings

Mar 7
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May 74
Jun 129
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Sep 67
Oct 52
Nov 9

2006 sightings

Mar 4
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May 53
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Aug 25
Sep 18
Oct 9
Nov 1

2005 sightings

Mar 1
Apr 7
May 6
Jun 12
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Aug 29
Sep 7
Oct 8
Nov 1