The Rufous hornero (Furnarius rufus) is the national bird of Argentina. It is a member of the Furnariidae family, aka the "ovenbird" family. Its clay oven-like nest is depicted on the coin. (The ovenbird is a different bird who is not a member of the ovenbird family. I know... confusing.)
Thanks to Andrés from Argentina who sent me this coin and completed the Argentina section of the Coin Zoo!
All coin images in Daniel's Coin Zoo are from my personal collection. I collect, research, and personally photograph every coin displayed on this site. PLEASE do not take my images without permission. If you would like to use any coin image you see, just ask me. Thank you.