Starscream isn't exactly always in the loop when it comes to things announced via radio. He can sort of operate one with his beak and talons, but carrying the device around with him is clunky and prohibitive to the kind of speed and agility he likes to maintain in this weakened form.

Thus, when he spots the Ringmaster in her human form for the first time, he has no idea what to make of it. Everything he's heard, any information he has, has been gleaned from eavesdropping on other workers, so he's determined to get a look at her himself so he can piece together all the bits. Get a better idea of what's going on. That's why he's perched above the entrance to her quarters at the moment. Or... Less perching, and more floating awkwardly, because at the moment, instead of being a crow, he is in the form of a ridiculous looking rock-hopper penguin.

When the Ringmaster emerges, he leans forward a little, flippers windmilling, beady red eyes squinting suspiciously.

He speaks up with no preamble: "I must say, there's something strikingly different about you today, Ringmaster... I just can't put my finger on it."