North American Butterfly Association

California Sister

NABA Butterfly Counts

The North American Butterfly Association has run the Butterfly Count Program in the United States, Canada, and Mexico since 1993. Each of the approximately 450 counts consists of a compilation of all butterflies observed at sites within a 15-mile diameter count circle in a one-day period. The annually published reports provide a tremendous amount of information about the geographical distribution and relative population sizes of the species counted. Comparisons of the results across years can be used to monitor changes in butterfly populations and study the effects of weather and habitat change on North American butterflies.

Scientists who are interested in obtaining NABA Butterfly Count data for research, please contact us at

The 380 U.S. counts in 2016 were held in 43 states plus the District of Columbia. Florida, as usual, led in number of counts (52, down from 57 last year), followed by California (25, down 3 from last year) and Tennessee (22). Eleven other states submitted 10-21 counts, 21 states reported 2-9 counts, and 7 states plus D.C. reported a single count. No counts were submitted from Delaware, Hawaii, Illinois, Nevada, North Dakota, Rhode Island, South Dakota, or West Virginia.

The 20 Canadian counts in 2016 were held in 2 provinces. Ontario reported the most counts (16, down 4 from last year), while Saskatchewan fielded 4 (up 1). One count was submitted from Mexico.

We welcomed 10 new counts in 2016—9 in the U.S. and one in Mexico.

Copies of the 2016 and previous NABA Butterfly Count Reports (years 1982-1984, 1986, 1987, 1989-1992, 1994, 1998-2000, 2002-2007, 2010, 2012, 2015 are also available). Each report is $11 for NABA members and $16 for non-members. Shipping within the U.S. is $2 for the first item and $1 for each additional item. For shipping costs to addresses outside the U.S. please email Please make check payable to NABA and order from the address below.

NABA Butterfly Count
4 Delaware Rd.
Morristown, NJ 07960

2016 NABA Butterfly Count Report


Sharon Wander


Jeffrey Glassberg, Michael Cerbone, Donna Abbott, and Jane V. Scott

Regional Editors

Southern California (CA) - Marilyn Lutz
Northern California (CA) - Paul Johnson
Northwest (AK, OR, WA) - Alison Center
Southwest (AZ, NM) - Fred Heath
Southern Rocky Mountains (CO, NV, UT) - Lynn Monroe
Northern Rocky Mountains (ID, MT, WY) - Brian Williams
Texas (TX) - Don DuBois, Ednelza Henderson, and Hugh Wedgeworth
Plains (KS, ND, NE, OK, SD) - Babs Padelford
Western Canada (AB, BC, MB, NT, SK, YT) - Alison Center
Southeast (AL, AR, LA, MS) - Marty Floyd
Central Midwest (IL, IA, MO) - Mary-Eileen Rufkahr
Upper Midwest (MN, WI) - Jim Phillips & Michael Reese
Appalachians (KY, TN, WV) - William G. Haley, Jr.
Great Lakes (IN, MI, OH) - Steven Mueller (MI), Greg Oskay (IN), Jerome L Wiedmann (OH)
Florida (FL) - Teri Jabour and Don Stillwaugh
South Atlantic (GA, NC, SC) - Mike Chapman (GA) and Harry E. LeGrand, Jr. (NC, SC)
Mid-Atlantic (DC, DE, MD, VA) - Rick Cheicante (DC, DE, MD) and Carolyn Henley (VA)
New Jersey-Pennsylvanvia (NJ, PA) - Annie & Jason Brueck (PA) and Chris Williams (NJ)
New York (NY) - Charles R. Smith & Colleen Wolpert
Southern New England (CT, MA, RI) - Mark Fairbrother
Northern New England (ME, NH, VT) - Annie & Jason Brueck
Eastern Canada (NB, NF, NS, ON, PQ) - James Kamstra