Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page LeConte's sparrow:

"

The male's song resembles a grasshopper buzz with a short squeaky introductory note and ending with a short chirp.[1] It is often described as tika-zzzzzzzzzzzz-tik while the call is a short tsip.[2][3] It is most commonly confused with the song of the Nelson's sparrow. The male generally sings from a concealed location, but can also be seen singing from the top of protruding grass stems, or occasionally in flight.[4]