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We also received reports of the following 18 species, none of which is likely to occur at Palenque and, therefore, all of which we feel were the result of honest mistakes, either in identification or in reporting the locality, or would represent significant enough extensions in range or habitat that full documentation would be needed: Geranospiza caerulescens (Vieillot, 1817) [Crane Hawk]; Busarellus nigricollis (Latham, 1790) [Black-collared Hawk]; Buteo albicaudatus Vieillot, 1816 [White-tailed Hawk]; Amazona xantholora (Gray, 1859) [Yellow-lored Parrot]; Dromococcyx phasianellus (Spix, 1824) [Pheasant Cuckoo]; Lurocalis semitorquatus (Gmelin, 1789) [Short-tailed Nighthawk]; Streptoprocne rutila (Vieillot, 1817) [Chestnut-collared Swift]; Amazilia yucatanensis (Cabot, 1845) [Buff-bellied Hummingbird]; Lamprolaima rhami (Lesson, 1839) [Garnet-throated Hummingbird]; Atthis ellioti Ridgway, 1878 [Wine-throated Hummingbird]; Empidonax flavescens Lawrence, 1865 [Yellowish Flycatcher]; Vireo pallens Salvin, 1863 [Mangrove Vireo]; Cyanocorax yncas (Boddaert, 1783) [Green Jay]; Petrochelidon fulva Vieillot, 1808 [Cave Swallow]; Vermivora celata (Say, 1823) [Orange-crowned Warbler]; Cyanerpes lucidus (Sclater and Salvin, 1859) [Shining Honeycreeper]; Cyanocompsa parellina (Bonaparte, 1850) [Blue Bunting]; and Euphonia elegantissima (Bonaparte, 1838) [Elegant Euphonia]. The parrot, cuckoo, Amazilia hummingbird, vireo, swallow, and bunting are known from forests on the Yucatán Peninsula but apparently do not occur in the foothill rainforests of the Sierra de Palenque. The swift, other 2 hummingbirds, flycatcher, honeycreeper, and euphonia are highland species essentially restricted, in Mexico, to cloud forest or other high-elevation habitats (e.g., humid oak forest). The hawks are known from marshes (Busarellus nigricollis) or savannah to the north and east of Palenque but have been recorded no closer than La Libertad, Chiapas, or Balancán, Tabasco. The nighthawk is almost unknown in Mexico, and the only sight records—there are no specimens (Puebla-Olivares et al., 2002)—are from the eastern Selva Lacandona (Howell and Webb, 1995). A record for Palenque is perhaps plausible, but the probability of an identification error is far higher. Lastly, the warbler winters no closer than the highlands of Chiapas and is but a vagrant to the Yucatán Peninsula and Belize (e.g., Parkes, 1970). The authors would be pleased to receive documentation, particularly photographs, videos, or audio recordings, of any of these species or any others that do not appear on the main list.