1. Explain the characteristics of the pigeon’s ‘bobbing’ motion (1 mark)
2. The images bellow are a birds eye view of a human (green) and a pigeon (blue). Draw their eyes and lines of site. Shade and cross over sections with a different colour. (3 marks)
3. Explain what occurs at the cross over part (2 marks)
4. Define the term motion parallax and give an example (2 marks)
5. How do pigeons judge distance and depth (1 marks)
6. Explain what Saccadic eye movements are (1 mark)
7. What is meant by the term Stereoscopic vision (1 mark)
8. Being a famous scientist in avian biology, you have been tasked with designing an experiment to determine why pigeons bob their heads. (4 marks)
Aim:
Method:
Hypothesis:
9. In your experiment above, what were the: (3 marks)
Control variables:
Independent variables:
Dependant variables:
10. All animals are designed to survive. Everything from the smallest bacteria to an elephant are biologically designed (through natural selection) to thrive in their environment.
Explain how the eyes of a pigeon and human differ, and explain why this is. Include reasons which support the positioning of the eyes on the head. (3 marks)
Total marks 23
Pigeon Bobbing worksheet
