Mallards are a very common duck that are easy to find. Find out why Bill thinks they may be an invasive species.
Our sources for this episode include:
- Unflappable Facts About Mallards http://mentalfloss.com/article/78330/15-unflappable-facts-about-mallards
- Mallard duck facts http://www.softschools.com/facts/animals/mallard_duck_facts/587/
- Mallard https://www.allaboutbirds.org/guide/Mallard/lifehistory
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