Message Number: SG16834 | New FHL Archives Search
Date: 2006-03-21 15:01:20 UTC
Subject: [ferrethealth] RE: darkness/natural sunlight

>period is interrupted by even a few seconds of artificial light, that's enough to mess >up the laying cycle of hens.

There are studies indicating that the shorter wavelengths, the blues and greens, are especially good at shutting down or decreasing melatonin production.

>I don't think wild polecats are big sun-worshippers, anyway, since they probably do >most of their hunting at dawn and dusk and lay up in their burrows during the day. >Just my humble opinion, subject to revision by any new facts established by research.

Polecat studies show that their typical main periods of outside activity are crepuscular (low light, i.e. dawn and dusk) and while they may set up elsewhere they prefer purloined burrows which are very dark in the day time. So, as you say: "subject to any new facts established by research".

I have often wondered if so much time spent nurturing and being nurtured in darkness, hunting in darkness when going after burrow dwellers and dimness otherwise, and defending in darkness and dimness (against snakes and some things larger than themselves) pre-adapted their line for being so good at understanding speech due to the ancestral need to understand so many nuances of sound. Ferrets are very good at ignoring people but when the hearing ones are given carefully repeated simple words and simple sentence structure they learn human words very rapidly. Several vets have pointed out to me that they appear to be substantially better at that then dogs or cats, which fits our observations as well.

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