The oxidative cost of acoustic signals: examining steroid versus aerobic activity hypotheses in a wild bird
S Baldo, DJ Mennill, S Guindre‐Parker, HG Gilchrist… - Ethology, 2015 - Wiley Online Library
Vertebrate vocalizations are widespread secondary sexual signals used for mate attraction
and territory defence, and variation in signal quality is often condition dependent and …
and territory defence, and variation in signal quality is often condition dependent and …
Echoes of birds' song and poets' song.
CN Moe - Atenea, 2014 - go.gale.com
" We've been on earth all these years and we still don't know for certain why birds sing,"
Annie Dillard writes in Pilgrim at Tinker Creek, a 1972 collection of essays which interweave …
Annie Dillard writes in Pilgrim at Tinker Creek, a 1972 collection of essays which interweave …
[引用][C] Atenea, Volume 34, Issue 1-2, viii, 131 pages
N Batra - Atenea, 2014 - … de Artes y Ciencias, Universidad de …