We had two Lakenvelder for a little while. When they were free ranging they would sometimes talk to each other. A little sound that I have not heard any other time. Like they were saying "I'm here", "I'm here", back and forth to each other. That stopped when we lost one of them. The remaining Lakenvelder continued to be our most entertaining hen. She would escape out of our chicken enclosure at will and also return at will. Often several times a day. One time we found a dozen of her eggs in a box of sticks (for kindling) in the wood shed.