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Science 19 June 1998:
Vol. 280. no. 5371, p. 1807
DOI: 10.1126/science.280.5371.1807e
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NetWatch

Although a Science reader probably couldn't pick the fittest mate based on suitors' serenades, female gray tree frogs sure can, according to a report this week by Welch et al. (see p. 1928 and News story on p. 1837). Some male gray tree frogs have long calls; others have very short ones. You can also hear recordings of these calls and guess which crooner is most desirable.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)