Want to warm up your set after the feather change? See this dispute singing, macheating and calling a lot!! will heat up your crack iron to the maximum!!

A little smaller than other species of the same genus, measuring 20 cm in length, it weighs approximately 45 g, has the same strong black beak that gave rise to the common name of these birds. As in the tempera-viola (Saltator maximus), it has a green back, grayish tail and sides of the head. The superciliary stripe is the longest of the three species (adult bird), with a less defined “moustache” and an all white throat. Underneath, gray dominates the sides, becoming orange-brown and white in the center of the belly. The wings are greenish. The juvenile does not have such a long stripe, being the same missing or non-existent, right after leaving the nest. Some juveniles are striped below.

Very energetic and fortified beak (which gave its name to the name “crack-iron”), with a tail that is different in size. There are no bodily differences between males and females.

Its singing varies a little from region to region, although it keeps the same timbre. To differentiate the male from the female it is necessary to notice the male's singing and the female's chirping.