Various embodiments herein relate to electrochromic windows that are bird friendly, as well as methods and apparatus for forming such windows. Bird friendly windows include one or more elements that make the window visible to birds so that the birds recognize that they cannot fly through the window. Bird friendly windows can be used to minimize avian-window collisions, and therefore minimize avian deaths resulting from such collisions. In various embodiments, a window may be patterned such that the pattern is visible to birds. In these or other cases, the window may be made hazy, where the haze is visible to birds. The pattern and/or haze may be visible at wavelengths that fall in UV, and minimally noticeable (if at all) in wavelengths within the spectrum visible by humans.
