Cassin's grandslam? or dreaming of a Cassin's penta-slam?

[David Suddjian]

Speaking of Cassin's and the recent "trifectas" thread, here is a good CO challenge: how many bird species named after John Cassin can you find in one day? Here are the possibilities. 4 Cassin's species in one day in CO maybe, but getting all 5 will be hard! In my dreams...

David Suddjian

Ken Caryl Valley

Littleton, CO

North American species named for Cassin include:

• Cassin's Auklet (Ptychoramphus aleuticus)
• Cassin's Finch (Carpodacus cassinii)
• Cassin's Kingbird (Tyrannus vociferans)
• Cassin's Sparrow (Peucaea cassinii)
• Cassin's Vireo (Vireo cassinii)