[cobirds] Top Ten Most Difficult to Add to North American Life List

I am in the process of writing a memoir. Some chapters will pertain to birding and life listing. I know we all have our personal lists that include those nemesis birds. But does anyone know of an "official" Audubon or ABA list that shows the most difficult to find species in North America? If so, please send me a website and I will pursue it. 

But why limit the fun. If you want to share your personal hardest or nemesis birds, go right ahead. I suspect that some on the list will be Colorado birds, just to keep our connection to our state. Thanks.

John Rawinski

Monte Vista, CO

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