This is my 2007 Birdy Anthracite 9speed. I had 9 speed capreo crankset and shifter derailleur etc (this is the second photo) but changed to 10 speed aftermarket Capreo (Joseph Kuosac) as described
here along with a 56T crankset (the photo with the sandstone background). The shifting is an ongoing problem but I think it will get sorted out. Wheels are also Joseph Kuosac carbon rims.
The bike is currently 10.2 kg. I love riding it. Part of the reason is that it is so comfortable. I am 191cm and 93kg. I think there are a number of stand out comfort features in the Birdy - the suspension front and rear, the long seat post and the reverse setback on the seat post. These translate into some cushioning that makes the ride so good. I have a colleague who reads Chinese and this helps with upgrade fever. I also upgraded to the
Multi-S front suspension. I found the rear Multi-S too stiff for me. Tyres are Schwalbe kojak. Overall, I love my Birdy. I use it 4-5 days a week commuting 60km (30kmx2), sometimes less as if I am tired I just ride to the train and fold it up!
I do sometimes wonder what is in my brain, that of all the bikes in the garage each morning, its 95% of the time the Birdy that gets chosen for my commute. And, when I think I want to get another bike I see myself thinking about Bromptons and Bike Friday pocket rockets and Dahon P8s. Or a Birdy disc...