Day of the Diucas

Not a great photo, but I wanted to try a Kenko 1.4 extender with my Canon 400mm 5.6 prime. I chose a cloudy day and I had to use manual focus and crop heavily but I kept the ISO low and they do at least look like birds. Diucas, actually.

English name: Common Diuca-Finch
Argentine Name: Diuca diuca
Latin classification: Diuca Comun

Shot: Laguna Rosales, San Martin de Los Andes, Argentina, 09 November 2013