[2] The undulated antpitta (G. squamigera) is a bit smaller, with a pale hue to the malar region and a yellower belly.

Its song is hard to distinguish, but rather than simply breaking off after a time, it ends with some additional trills, separated by pauses of increasing length.

[2] In Colombia, historically the subspecies G. g. lehmanni inhabited both slopes of the Cordillera Central, where specimens were taken in Cauca and Huila Departments before the mid-20th century, one (in 1941) in what today is Puracé National Natural Park.

In 1988 and 1989, the species was recorded in La Planada Nature Reserve, Nariño Department, but the taxonomic identity of these birds requires verification.

[2] In Ecuador, the nominate subspecies was formerly more widespread on the eastern slope of the Andes, but in recent times its presence is only confirmed in western Napo Province.

In Pacha Quindi Nature Refuge and Botanical Gardens, an adult G. g. hylodroma was seen feeding a recently fledged young a large earthworm on April 19, 2001.

Still, it considered threatened and is known in less than 10 locations (a total of 1,900 square kilometers), with habitat continuing to decline in quality and quantity and some subpopulations on the brink of complete extinction.

Only in the range of the nominate subspecies does deforestation seem to have declined to levels where the species can be considered relatively secure; elsewhere, it is still extensive and may even threaten protected areas.