How does migration affect population size? MiniLab Procedure

Name
Date
Class
C21L2
MiniLab
LESSON 2: 20 minutes
How does migration affect population size?
Your class will model a population of birds that migrates during the fall and the spring.
Procedure
1. Read and complete a lab safety form.
2. Begin at the summer station. Record in
the Data and Observations below the
size of the bird population represented
by your class. When your teacher
signals, move to the fall station.
3. Take a piece of paper from the jar. If
the paper has a minus sign, drop out of
the game. If it has a plus sign, bring a
classmate into the game.
4. Record the size of the remaining
population at the fall station.
5. Migrate to the winter station and
repeat steps 3 and 4. Move two more
times and repeat for spring and
summer.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Data and Observations
Analyze and Conclude
1. Draw Conclusions What might happen if the birds did not migrate each year?
2.
Key Concept How did the population change throughout the year?
Populations and Communities
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