Plumbeous Seedeater Like us on Facebook. Males are unusual among this genus in being principally gray with no yellow on the head, although there is contrasting yellow belly patch. Apparently no information available. Manage your personal recordings, Plumbeous euphonia and lists of bird sightings in MyBirding. Like other euphonias, the Plumbeous Euphonia is usually encountered in pairs, which sometimes join mixed-species flocks. Its natural habitats are Plumbeous euphonia or tropical moist lowland forests and heavily degraded former forest. IUCN Red List of Threatened Species.