Which of the following is NOT affected by a biological clock. This anticipation could help aviod unfavorable conditions, or to stay in cycle with favorable conditions. Give 2 costs and 2 benefits. The bird is released on a sunny day at 6am. You may assume you are in the northern hemisphere and the sun is due east at 6am and due west at 6pm.
Many animals use the sun or the moon for geographical orientation.
To determine if testosterone is necessary for male mounting behavior, a researcher castrates a male adult rat and discovers he does not exhibit the mounting behavior in the presence of a receptive female. What other piece of information is required to determine if testosterone is necessary for male mounting behavior. Which one of the following choices is NOT a reason for young birds to learn songs. Which of the following is the most essential explanation for these behaviors. Which is not required for proper night orientation in the Indigo Bunting.