Diamonds in the Sky

When Don West finds the person that ejected, the name on the side of the person's helmet is "Goddard". The original Major Don West was played by Mark Goddard.

West tells Dr. Smith that the rocks in the terrain are sharp and would cut through her normal shoes quickly (thus convincing her to wear the dead person's boots). To illustrate his point, West takes some dirt into his hands, and his fingers start bleeding as he rolls the dirt between his fingers. Unless the chicken weights considerably less than a human wearing a heavy suit and carrying stuff, therefore there would be less pressure on it's feet and less likely to get it's feet cut.

However, the chicken apparently has no problem walking around on the sharp stones, as when West picks it up later, you can see its feet are fine. The chicken has been moving around on the terrain, so if what West said was true about how sharp everything was, it's doubtful the chicken would have escaped unharmed.