The Canada Goose Chin Strap
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MatingCall
A mating call is the auditory signal used by animals to attract mates. It can occur in males or females, but literature is abundantly favored toward researching mating calls in females. In addition, mating calls are often the subject of mate choice, in which the preferences of one gender for a certain type of mating call can drive sexual selection in a species. This can result in sympatric speciation of some animals, where two species diverge from each other while living in the same environment.
wiki,
Mate choice is one of the primary mechanisms under which evolution can occur. It is characterized by a "selective response by animals to particular stimuli" which can be observed as behavior.[1] In other words, before an animal engages with a potential mate, they first evaluate various aspects of that mate which are indicative of quality—such as the resources or phenotypes they have—and evaluate whether or not those particular trait(s) are somehow beneficial to them. The evaluation will then incur a response of some sort.[1]
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These mechanisms are a part of evolutionary change because they operate in a way that causes the qualities that are desired in a mate to be more frequently passed on to each generation over time. For example, if female peacocks desire mates who have a colourful plumage, then this trait will increase in frequency over time as male peacocks with a colourful plumage will have more reproductive success.[2] Further investigation of this concept, has found that it is in fact the specific trait of blue and green colour near the eyespot that seems to increase the females likelihood of mating with a specific peacock.
wiki, mating call
Mated pairs will greet each other by alternating their calls so rapidly that it seems like only one is talking. The typical "h-ronk" call is given only by males. Females give a higher-pitched and shorter "hrink" or "hrih". Pitch also changes depending on the position of the neck, and the duration of the call varies depending on context. Dominant individuals are about 60 times more vocal than submissive flock mates. Canada geese calls range from the deep ka-lunk of the medium and large races to the high-pitched cackling voices of smaller races. Researchers have determined that Canada Geese have about 13 different calls ranging from loud greeting and alarm calls to the low clucks and murmurs of feeding geese. A careful ear and loyal observer will be able to put each voice to the honking goose/geese.
canadageesedotcom, web
Notes: this, this is one of those things hiding in plain sight, and, to find, some old Greek myth or fable expressing it...another curio is this: if, as Darwin says, even a single word fights for survival, then so languages, and Ipso Facto, words flirt, and diverge...aaaand, while some species haven't diverged for millions of years, content with the same old song, languages can't stay still, fluttering always in the winds of fashion...what rustlings are there in the Fauna?...the Flora?...do Canada Geese raise their heads to show off their chin straps?...brb...and much else...
Aloha,
:)
DavidDavid
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