Method
1. A grouse crop is distributed to each student or group of students.
2. The crop is opened, and the contents are divided into piles of similar materials, Those bits of food that are unidentifiable are placed in a pile with that name. Descriptions of food types should be named as specifically as possible. For example, clover would be better than just classifying the food as "leaves".
3. Mass the piles of food types in grams.
4. Determine the total mass of food in the crop in grams.
5. Calculate the percentage of the diet comprised by each food type using this formula:
Percentage (%) of diet of a specific food type equals (=) grams of a specific food type times (x) 100 = total grams of food in crop
6. Construct a bar graph with food types along the bottom, and percentage of crop contents along the vertical axis. Use a different color for each food type.
7. On the blackboard, compile the data from all crops, totaling the amounts of specific food types, and determining the total amount of food in each crop. Determine the percentage of diet of each food type; calculate from all of the collected crops.
Results
Record all data in the chart below (you may add more rows if necessary).
Type of Food
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Mass (g) of food type
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Total mass (g) in crop
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% of crop contents
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