the FAA, which warns pilots that their GPS signal "may be unreliable or unavailable" due to "GPS tests" that the Department of Defense will be conducting between January 20th and February 22nd. Details are fairly light beyond that, but the FAA does note that when the "tests" occur they will be active for 45 minutes, and be followed by 15 minutes of off time --And that's when new reports of bird and other animal die-offs will appear.
The testing hasn't happened yet, and the die-offs occurred end of December and the New Year. Which suggests that testing has already begun -- sort of "pre testing."
Animal die-offs have been happening all over the globe, and not all of them are directly related to sinister covert activities of course. But none of this is a coincidence.