What a lot of people forget is that Valken can hear every conversation at once, and since they group was so tightly packed together, it wasn't hard at all. When he was announced as a friendly, Valken relaxed slightly and let the armored tin man approach him. He had to stick his face rather close for valken to see him properly and upon doing so, things clicked. 
"Oh...its you.." He said, his ears turning to focus on Ishmael. " I should have guessed you'd be around here.." 
Valken stood silently as his name was given out to the group along with his title of St. micheals son and frankly he was a little embarrassed by that. 

But among the smells and sounds of the different people he was taking into his senses he noticed that Cassandra approached him rather casually and immediately he lowered his head and bent his knees so that he would be lower to her. It was a sign of respect and submissiveness as she practically saved his means to eat. They had met when Valken tore his wing which rendered him unable to fly with out considerable exertion. With out his ability to fly he would not be able to catch humans, travel, or get away from danger.
With out retaliation he let her take his wing and out stretch it to examine the thin layer of stretched skin and upon it there was a medium patch of a lighter shade of skin where his tear was. 
"Yes.." Valken answered her simply before raising up to his full height and he took a large intake of air through his nose at her direction. 
"You do not smell exactly the same as I remember.. it must be this dirt.." he said almost endearingly. 
During his tasting session with cassandra he listened to Ishmaels plan. There was a few more females in the group and it seemed he ruffled one of their feathers. She seemed pretty adamant about her religious beliefs and frankly it made sense to him. Valken shrugged, to each their own. 

He focused his ears to another group of females, his eyes weren't the greatest at sensing depth or detail but even from here he saw a pink blob. "My mother is a dark witch...and she makes good cookies and bread. By the way, I can hear you. And yes, it's a real mess out there.." He turned to Ishmeal, agreeing to the idea of keeping on.