The parties often refer to the result of the negotiation as a collective bargaining agreement (CBA) or as a collective employment agreement (CEA).
When theyâre happy and satisfied they make a humming sound. This sounds like a blend of buzzing and humming. When in danger alpacas will sound an alarm which sounds a little like a horseâs whinny. And, as you now know, before mating alpaca stallions âorgleâ.
Segments of the rattle break periodically, and longer rattles do not necessarily produce louder sounds. When the apparatus is shaken at high speed, a buzz or rattling sound is created; rattlesnakes have three sets of dedicated, tail-shaking muscles in their tail.Two of the muscle groups pull the tail to each side, and a third set of muscles allows the ventral surface to be aimed in either direction.hen the apparatus is shaken at high speed, a buzz or rattling sound is created; rattlesnakes have three sets of dedicated, tail-shaking muscles in their tail. Two of the muscle groups pull the tail to each side, and a third set of muscles allows the ventral surface to be aimed in either direction.