To understand the nature of digital photography, one must have a good grasp of the histogram display. From the spectrum of light to dark zone, digital exposure shares a common denominator with slide film that "over-exposure is death", whereas under-exposure extrudes the least digital data when moving from the light to the dark zone.
Hence, the skill every landscape photographer must understand is the practice of "Expose-to-the Right" in order to capture the maximum digital data on the RAW file. The following article is very helpful to learn how to master this concept that may improve one's odd when shooting birds with extreme white or black plumage:
http://www.digitalcameraworld.com/2012/ ... must-know/Good birding and photography.