Editing Spring peeper (section)

=== Lifespan ===
[[File:Tadpole 2015-04-16-12.04.26 ZS PMax (16571152244) (2).jpg|thumb|Tadpole 2015-04-16-12.04.26 ZS PMax (16571152244) (2)]]
After they hatch, they remain tadpoles for two to three months before transforming into frogs and are ready to leave the water.<ref name="www.biokids.umich.edu" /> Following breeding in the spring, the spring peepers' larval stage lasts two to three months.<ref name="Skelly 1995 203–207"/> The spring peeper can live an estimated three years in the wild.<ref>{{cite web |date=11 November 2010 |title=Spring Peeper National Geographic |url=https://www.nationalgeographic.com/animals/amphibians/s/spring-peeper/ |archive-url=https://web.archive.org/web/20170507163019/http://www.nationalgeographic.com/animals/amphibians/s/spring-peeper/ |url-status=dead |archive-date=May 7, 2017 |website=Animals |language=en}}</ref>

By looking at the different shading/coloring of concentric rings in the skeletons of spring peepers, age can be determined regarding the way of bone growth. Darker lines coincide with periods of higher survival rates during winter months. Lighter lines and areas represent periods of bone deposition and rapid growth.<ref name="Lykens-1987" /> These lines allow it to be determined that spring peepers begin to breed, going into their third spring when they are two years old. Male spring peepers have reached sexual maturity at this time yet are smaller in size than females. Between spring peepers' second and third years, their body size increases significantly, then subsequently plateaus. During the first season of breeding, the two-year-old males produce higher frequency calls than males in their third and fourth seasons do <ref name="Lykens-1987">{{Cite journal |last1=Lykens |first1=David V. |last2=Forester |first2=Don C. |date=1987 |title=Age Structure in the Spring Peeper: Do Males Advertise Longevity? |journal=Herpetologica |volume=43 |issue=2 |pages=216–223 |jstor=3892054 }}</ref>[[File: Spring Peeper tadpoles.jpg|thumb|right|''P. c. crucifer'' tadpoles, about 4–5 wk old and 24 hours away from complete [[metamorphosis]].]]