Sentences with phrase «alarm calls alone»

Using speakers set up near feeding platforms baited with bird seed, they recorded the birds» responses to three different recordings — alarm calls alone, traffic noise alone, and a combination of the two.

Not exact matches

We risk belaboring those obvious points because not a single reporter or commentator in the so - called mainstream media, as far as we can tell, has seen fit to remark on, let alone express alarm over, this stupendous grab for global, despotic power.