Leave it to Beavers - Critical Thinking

Preparation

• Review the article: Leave it to Beavers @ ducks.ca
• Review the Critical Thinking Framework

For this exercise, we will focus on Step 4 of the Critical Thinking Framework: If evidence is provided, is that evidence sound?

Article Summary: "The issue at hand."

The article argues that beavers provide strong ecological benefits when conditions allow. In places where human infrastructure is at risk and non-lethal management fails, the author suggests that lethal removal may be necessary.

Focus Question

If evidence is provided, is that evidence sound?

Consider the Following Questions

Use of Expert Opinion

The author refers to an expert, Bruce Batt, to confirm the benefits of beavers in places where they are not considered nuisances.

• Is this expert a specialist in wildlife management, including beaver management?
• Is expert opinion necessary for this part of the argument? Why or why not?
• What does this expert appear to believe about the effectiveness of beaver management techniques?

Management Techniques

The author lists several management techniques, including bafflers, fencing, trapping, and harassment.

• When do these management techniques fail?
• How often do they fail, according to the article?
• Can you find a state or province that has successfully used non-lethal methods to manage beavers?
  • How do they define or measure success?
• Were any techniques left off the list?
  • For example, are methods such as drugging or tranquilizing mentioned or discussed? Could they be used with beavers? When?

Legal Context

• Are there laws that regulate lethal removal of beavers on public or private property?
• Are any organizations or governments working to change laws?

Drawing Conclusions

After doing some research, answer the following questions:

• Which conclusions in the article are supported by evidence?
• Which conclusions would require more evidence to be convincing?

Exercise

Make a list of questions you would ask the author of the article. Then, compose a short letter requesting clarification or additional information.

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Note: Although the publisher may be associated with broader debates, this exercise focuses on the article’s content and does not require engagement with those wider issues.