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@MissySki I found the following regarding the Camox Birdie:
"The 2020 model has brought two intermediate lengths so skiers can better dial in the correct ski length for their particular style of riding. The sidecut has also changed with the 2020 Camox Birdies. Now the shape of the ski remains more constant with the scaling per ski lengths. So the ski should ski similarly, be it a 156 cm or 174 cm length. Lastly, the softened the flex pattern so create a more playful, bouncy style of skiing.
The Camox Birdie comes with a poplar wood core to create it's light and nimble character. A semi-cap construction with step-down sidewall is an advanced construction technique that the Birdie Series all uses which makes for a durable, long-lasting ski. The Camox in particular has a softer flex pattern with double rocker to make the ski more maneuverable and pivot-friendly. This shape makes the ski agile in mixed terrain, like in the trees or in variable snow."
"The latest update was made for the 19/20 season, with the ski getting slightly less tapered at the tip and tail and reportedly coming with a slightly softer flex pattern. Those changes carried forward for the 20/21 and 21/22 seasons, just with a graphic update."
@santacruz skier and I have the 16/17 version which has semi-cap construction, poplar wood core and carbon kevlar stripes according to BC. For that generation, it was the only ski with the carbon kevlar - other models like the Atris and Captis did not. The current version (2022) of the Camox/Birdie does not have metal.
If you want more info on current models check this video out .... also there is no difference between the birdie models and the unisex other than top sheet and smaller sizes.