<div>Figure Legends</div><div>Figure 1. Late summer view of wet sedge meadow habitat at Potawatomi
Woods Forest Preserve in northern DeKalb County, Illinois inhabited by<i>S. occipitomaculata</i> , <i>S. dekayi</i> (inset), and <i>T.
sirtalis</i> . The <i>S. dekayi</i> shown was captured on 17 Aug 2017 and
measured 77 mm snout-vent length and weighed 0.35 g. Photos by R. King.</div><div>Figure 2. Relationship between snout-vent length and day of year for<i>T. sirtalis</i> in 2014. Neonates (filled circles) appear as a size
class distant from older snakes (open squares) whose growth trajectory
was estimated by regression (solid line). Dashed lines show estimation
of end-of-season snout-vent length, the expected snout-vent length on
day of year 274.</div><div>Figure 3. Yearly variation in end-of-season neonatal SVL (A) and
relationship between end-of-season neonatal SVL and the estimated hours
that gravid female body temperature exceeded 25 °C in April and May (B)
for <i>S. occipitomaculata</i> (squares), <i>S. dekayi</i> (triangles),
and <i>T. sirtalis</i> (circles) from 2009-2018. Small sample size
precluded computing end-of-season SVL and mass for <i>S. dekayi</i> in
2012 and for <i>S. occipitomaculata</i> in 2009 and 2010.</div><div>Appendix 1. Parameter values used to hindcast snake body temperatures
using NicheMapR
(http://bioforecasts.science.unimelb.edu.au/app_direct/ectotherm_usa/;
Kearney and Porter 2020). Parameters for which settings differ from
default values are shown in bold.</div>