Butterfly sighting

Craig Ellefson

Location: Cook Arboretum in Janesville
Rock County

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2021 sightings

Mar 30
Apr 156
May 250
Jun 200

2020 sightings

Mar 12
Apr 86
May 283
Jun 501
Jul 521

Aug 397
Sep 155
Oct 62
Nov 25
Dec 1

2019 sightings

Mar 5
Apr 130
May 188
Jun 322
Jul 422

Aug 437
Sep 221
Oct 85

2018 sightings

Mar 7
Apr 38
May 196
Jun 280
Jul 354

Aug 349
Sep 148
Oct 64
Nov 2

2017 sightings

Feb 7
Mar 15
Apr 186
May 206
Jun 323

Jul 311
Aug 311
Sep 228
Oct 133
Nov 7

2016 sightings

Feb 2
Mar 24
Apr 152
May 327
Jun 340

Jul 354
Aug 288
Sep 245
Oct 116
Nov 77

2015 sightings

Mar 17
Apr 108
May 273
Jun 375
Jul 285

Aug 160
Sep 119
Oct 93
Nov 51

2014 sightings

Mar 1
Apr 60
May 258
Jun 295
Jul 356

Aug 265
Sep 143
Oct 79
Nov 5

2013 sightings

Mar 1
Apr 45
May 157
Jun 248
Jul 258

Aug 222
Sep 130
Oct 78
Nov 8

2012 sightings

Mar 115
Apr 232
May 368
Jun 373
Jul 263

Aug 203
Sep 139
Oct 69
Nov 9
Dec 1

2011 sightings

Mar 4
Apr 43
May 117
Jun 250
Jul 283

Aug 330
Sep 124
Oct 114
Nov 18

2010 sightings

Mar 28
Apr 100
May 178
Jun 152
Jul 212

Aug 211
Sep 113
Oct 79
Nov 11

2009 sightings

Mar 10
Apr 62
May 121
Jun 146
Jul 133

Aug 81
Sep 48
Oct 16
Nov 9

2008 sightings

Mar 3
Apr 48
May 89
Jun 104
Jul 125

Aug 143
Sep 67
Oct 38
Nov 3

2007 sightings

Mar 7
Apr 28
May 74
Jun 129
Jul 110

Aug 85
Sep 67
Oct 52
Nov 9

2006 sightings

Mar 4
Apr 22
May 53
Jun 67
Jul 52

Aug 25
Sep 18
Oct 9
Nov 1

2005 sightings

Mar 1
Apr 7
May 6
Jun 12
Jul 28

Aug 29
Sep 7
Oct 8
Nov 1