The images were a surprise to Humhum, it took him a few moments to guess that the creature staring at him was the cause. First time receiving a telepathic message is distracting and unusually. It was lucky there was a series of images making him hum as his response. Shifting his balance on one leg he was standing on, he spoke. 

''I prefer to fly mmmhmm, I am quite fast.mmm I could mmm hmmm keep up.''

There was a little bit of pride involved. He was far from the fastest in his colony but he was still fast. He wanted to prove it and show that he could keep up with anyone running. Even a interesting beast like his new friend. On the other hand Humhum was quite nice. Offering a compromise.

'' But if you insist mmm I may instead of riding mm just sit on your back. mhm mhm~ Either way mmm we should go...mmm Peter hurry up mhm. ''  

He turned around to check if someone was coming, not seeing anyone he let go of the blob fish. catching Artemis before he hit the ground with the same claw, but now making him face the opposite side than Humhum. The harpy simply thought if there happen to be something behind him Artemis will see it and be really loud about it.