Okay, stay with me here. Apparently foxes can detect the Earth's magnetic field, enough to use it for orientation when leaping at prey. So perhaps they associate electromagnetic fields with food, and electronics intrigue them, especially those with a capacitive sensor generating an electric field. So they'd like to eat your phone
so you can jam birds (and their magnetic sense can be disoriented by regular background RF noise)
Mouritsen and his team lined the huts with aluminum sheets to block the stray radio frequencies. On nights when the shields were grounded and functioned properly, the birds oriented well in Earth’s magnetic field. On nights when the grounding was disconnected, the birds jumped in random directions.
It is also remarkable that the birds in the Oldenburg lab were disoriented much more effectively by broadband radio-frequency noise (randomly fluctuating magnetic fields with a range of frequencies) than by the single-frequency fields mostly used by Ritz and his collaborators.
if fox magnetic sense works using similar mechanisms, this might actually be plausible
give your phone to a fox
for science