Best part of the iPhone 5 is that you can't call 911 after I cut your thumbs off

Considering the number of birds killed every day from common human activity such as driving cars, flying planes, discarding certain trash, its hard to think a few birds killed by windmills or a concentrated solar power (CSP) should be a concern. Not that they shouldn't take practical steps to minimize it. CSP is a neat technology, but far behind Solar PV and wind in being ready for practical applications, so it will likely remain a quite small part of the energy mix if/when it gets out of the pilot phase. CSP development is however, a really interesting to follow. It involves a range of challenges that cross engineering and material science disciplines that aren't obvious when you think "its just generating steam with mirrors". But, in reality, it is really hard to obtain the steady heat input and control needed to obtain steady, quality steam. There are numerous trade-offs between heat absorbing coatings, their adhesive techniques and their ability to expand and contract frequently. There is a challenge in designing the right turbine which operates efficiently as possible over a wide operating curve. Central "boiler" tank type designs have very slow heating / cooling times, which helps dampen solar variances, but make it difficult to place turbine cycle equipment nearby in a way that doesn't impact the heating approach. The linear Fresnel mirror/tube type CSP plants on the other hand have big problems in maintaining even heating throughout the long tubes which leads to hammer and damage, and a lot of expansion/contraction related issues. I'd love to work on one of these projects, its worth reading about if that kind of thing gives you a rise.