After listening to Alejandro Rojas's interview with a couple of the researchers, I'm done trying to identify it as a bird. If two separate Flir experts concur that it is not a bird, then I'm certainly not going to prove them wrong. Also, the background on this event seems more solid after hearing the interview, i.e. the witnesses sound credible, which makes the 'pinkish blue' light more compelling to take into account. I look forward to hearing more about the study as different researchers respond to it. Especially if it gets into a journal.