What can we infer from this?

I made a second attempt at speaking with birds. This time they were little black ones. I called out this time in Iguanodontid, they didn’t respond or acknowledge me at first. I tried again and one of them puffed their feathers and squeaked. I tried two more times and they did the same thing. The other two didn’t though. HEEHEEHEEHAW
What can we infer from this?
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