The Slate-colored Grosbeak forages in the canopy and subcanopy of mature forests. Peru Aves shows an adult of unknown sex photographed in Pichincha, Ecuador.
The profile describes its adult Pichincha, Ecuador photograph, of unknown sex, as dusky gray overall, with a white chin and a thick coral-red bill.
The species profile says it forages in the canopy and subcanopy of mature forests and is more often heard than seen.
An extinction-risk assessment has not been added yet.