This extinct bird was once thought to be the most numerous bird in North America. What was the name of this bird?

The name of the extinct bird that was once thought to be the most numerous bird in North America is the Passenger Pigeon (Ectopistes migratorius).

The extinct bird that was once thought to be the most numerous bird in North America is the Passenger Pigeon (Ectopistes migratorius).

The extinct bird you are referring to is the passenger pigeon (Ectopistes migratorius). To find out the name of this bird, you can conduct a simple search using a search engine of your choice. Here's an example of how to do it:

1. Open your preferred web browser.
2. Go to a search engine such as Google, Bing, or Yahoo.
3. In the search bar, type in "extinct bird once thought to be most numerous in North America."
4. Press Enter or click on the search button.
5. Look for reliable sources, such as scientific articles, reputable websites, or books, that provide information about the bird.
6. From the search results, you will likely find multiple sources mentioning the passenger pigeon as the most numerous bird in North America.

Remember, it's essential to evaluate the reliability of the sources you find and cross-reference the information from multiple sources to ensure accuracy.