Same sort of diffrences as we see in Red Brows - depth of colour (grey green vs greeny-brown), brightness of neck or flanks (must be of same subspecies) - a pair together stand out once you get useed to looking at them.Tintola wrote:Danny, could you elaborate on dimorphism in Silver-eyes please.
What the uninterested overlook !!
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Danny
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Danny
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Some eye pics and the paper that confirmed my observations http://blx1.bto.org/pdf/ringmigration/22_4/smith.pdf
male - iris barely discernable from pupil
female - iris readily discernable from pupil
male - iris barely discernable from pupil
female - iris readily discernable from pupil
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vettepilot_6
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Shes a Ladyyy...Tintola wrote:I notice the teardrop extension on the left of the hen's eye whereas the cock has a perfectly round eye. Is that just a coincidence?
The Bitterness of Poor Quality Remains Long after the Sweetness of Cut Price is Forgotten
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Netsurfer
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I took several photos of a WWW male and a female eye just for the record couple years ago but unfortunately I wasn't as lucky could not see any difference.Danny wrote:Some eye pics and the paper that confirmed my observations http://blx1.bto.org/pdf/ringmigration/22_4/smith.pdf
male - iris barely discernable from pupil
female - iris readily discernable from pupil
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mattymeischke
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I think so:Tintola wrote:I notice the teardrop extension on the left of the hen's eye whereas the cock has a perfectly round eye. Is that just a coincidence?
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Avid amateur aviculturalist; I keep mostly australian and foreign finches.
The art is long, the life so short; the critical moment is fleeting and experience can be misleading, crisis is difficult....... (Hippocrates)
The art is long, the life so short; the critical moment is fleeting and experience can be misleading, crisis is difficult....... (Hippocrates)
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Danny
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Probably determined by how hard I was holding it around the neck - they are very squirmy birds to hold.Tintola wrote:I notice the teardrop extension on the left of the hen's eye whereas the cock has a perfectly round eye. Is that just a coincidence?
