These are ‘first of the season’ dates for a few of the animals that I see here. The dates are listed with the earliest first.
First Cardinal spring song
earliest – 2/9/15, 2/17/20, 2/22/21, 2/23/19, 2/29/18
First Red-winged Blackbird
earliest – 3/6/17, 3/7/16, 3/8/21, 3/8/20, 3/12/12, 3/13/10, 3/14/18, 3/15/09, 3/17/19, 3/18/15, 3/19/06, 3/19/11, 3/27/14
First Bluebird
earliest – 2/17/12, 2/23/20, 3/6/16, 3/7/18, 3/13/15, 3/15/09, 3/16/11, 3/17/17, 3/20/21, 3/24/19, 3/25/14
First Butterfly
earliest – 3/14/10, 3/16/09, 3/17/18, 3/19/11, 3/22/21, 3/26/05, 3/27/20, 3/29/19, 4/1/15, 5/5/13
First Infant Moth
earliest – 3/9/21, 3/13/10, 3/16/09, 3/20/17, 3/22/18, 3/24/20, 3/24/03, 3/24/19, 4/2/11, 4/7/13
First Turkey Vulture
earliest – 3/8/16, 3/10/12, 3/21/21, 3/23/19, 3/24/20, 3/25/17, 3/26/15, 3/28/11, 3/29/09, 3/30/14, 3/30/18, 3/31/10, 4/1/13
First Wood Frog calling
earliest – 3/18/10, 3/22/16, 3/25/21, 3/28/17, 3/30/20, 3/31/14, 4/6/09, 4/7/11, 4/8/19, 4/11/15, 4/22/18
First Ruby-throated Hummingbird
earliest – 5/1/10, 5/3/12, 5/3/09, 5/5/15, 5/6/18, 5/7/14, 5/8/20, 5/9/13, 5/9/17, 5/10/21, 5/10/16, 5/10/19, 5/26/08
First Baltimore Oriole
earliest – 4/27/20, 4/30/11, 5/1/21, 5/2/18, 5/3/15, 5/4/12, 5/4/19, 5/5/16, 5/6/14, 5/7/10, 5/8/17, 5/9/13
First Monarch
earliest – 5/3/12, 5/21/21, 5/22/17, 5/22/15, 5/22/09, 5/23/10, 5/24/18, 5/24/19, 5/25/14, 5/26/20, 5/26/16
peak fall migration – 8/31/2019 (544), 9/5/2020 (517), 9/1/2018 (301), 9/15/2017 (39)
graph of daily counts during migration
First Giant Swallowtail
earliest – 5/3/12, 5/5/20, 5/23/08, 5/26/21, 5/29/06, 5/30/18, 5/30/14, 6/6/19, 8/10/09
First Golden Eagle
earliest – 9/25/16, 10/21/15, 11/7/09, 11/8/10, 11/10/19, 11/18/13, 11/27/12, 11/28/21, 11/29/14, 12/2/11, 12/4/17, 12/30/18, 1/5/21
First Dark-eyed Junco
earliest – 9/26/10, 9/27/21, 9/28/12, 9/30/20, 9/30/11, 10/3/14, 10/5/17, 10/7/18, 10/8/15, 10/9/13, 10/10/16, 10/17/19