Figure Legends
Figure 1. Late summer view of wet sedge meadow habitat at Potawatomi
Woods Forest Preserve in northern DeKalb County, Illinois inhabited byS. occipitomaculata , S. dekayi (inset), and T.
sirtalis . The S. dekayi shown was captured on 17 Aug 2017 and
measured 77 mm snout-vent length and weighed 0.35 g. Photos by R. King.
Figure 2. Relationship between snout-vent length and day of year forT. sirtalis 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.
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 S. occipitomaculata (squares), S. dekayi (triangles),
and T. sirtalis (circles) from 2009-2018. Small sample size
precluded computing end-of-season SVL and mass for S. dekayi in
2012 and for S. occipitomaculata in 2009 and 2010.
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.