Fieldwork conducted in Veracruz and Chiapas, Mexico, between July and December 1991 indicates that the genus Hylorchilus merits retention and that the two forms, H. (sumichrasti) sumichrasti and H. (s.) navai, are good species, based chiefly on this study's discovery of their very different voices. Both are, however, ground-level feeders on invertebrates gleaned from limestone outcrops under closed-canopy forest, and both are at risk from habitat loss. Despite the very restricted range of H. navai and threats to its habitat the population is partially protected and so it is recommended it be allocated IUCN status “Rare”, while H. sumichrasti merits the existing classification “Vulnerable/Rare”.

Los trabajos de campo realizados en Veracruz y Chiapas, México, entre Julio y Diciembre de 1991 indican que el género Hylorchilus merece ser mantenido, y que las dos formas, H. (sumichrasti) sumichrasti y H. (s.) navai, son especies válidas, en base a las diferencias de voz descubiertas en este estudio. Ambas especies se alimentan a nivel del suelo, a base de invertebrados que capturan sobre rocas calizas en áreas de selva cerrada, y ambas están amenazadas por la pérdida de su hábitat. A pesar de que H. navai tiene un área de distribución muy pequeña y de que su hábitat está amenazado, la población está parcialmente protegida y por lo tanto se recomienda que se le considere en la categoría de amenaza “Rara” de la UICN, mientras que H. sumichrasti debe continuar como “Vulnerable/Rara”.

Fieldwork aimed at censusing Gumey's Pitta Pitta gumeyi in Peninsular Thailand was carried out over three field seasons. Fourteen sites were surveyed, at four of which the species was found. The main site (where it had been rediscovered in 1986) held 24–34 pairs, 12–18 of which were in the 500 ha study area. A second site held 3-6 pairs (but it is thought unlikely that this population still exists today), whilst the other two sites held only two pairs each and were thought to have negligible chances of survival. All territories were in semi-evergreen rainforest, below 150 m altitude. The current population i s probably some 20–30 pairs, with territories still being lost annually to deforestation. This is currently the total known world population; it is possible that the species may survive in southern Burma, but no recent surveys have been undertaken there. Furthermore, massive deforestation caused by Thai timber companies has been reported from Burma during 1988–1993. The interpretation of census results are discussed, particularly with reference to social organization and calling seasonality. The determined protection of the one remaining site supporting a viable population will be essential if the species is to survive into the next century.