1. Crocodile egg sounds signal hatching time
Amélie L. Vergne, Nicolas Mathevon 
Current Biology 
Volume 18, Issue 12, Pages R513-R514 (June 2008)
DOI: /j.cub
Copyright © 2008 Elsevier Ltd Terms and Conditions

2. Figure 1
Behavioral responses of Nile crocodile embryos and adult females to sound playback.
(A) Embryos show higher behavioral activity — in terms of emitted vocalizations and movements — during playback of pre-hatching calls than during playback of noise or silence period. ∗ (P < 0.05); ∗∗ (P < 0.01). (B) Crocodile mothers react strongly to playback of pre-hatching calls, most of them by digging the sand. ∗ (P < 0.05); ∗∗ (P < 0.01) (ns: not significant) See also Supplemental Movie.
Current Biology  , R513-R514DOI: ( /j.cub )
Copyright © 2008 Elsevier Ltd Terms and Conditions