| Status, distribution and biogeography of the birds of Paraguay FE Hayes Monographs in Field Ornithology 1:1-230, 230, 1995 | 240 | 1995 |
| The Amazon River as a dispersal barrier to passerine birds: effects of river width, habitat and taxonomy FE Hayes, JAN Sewlal Journal of Biogeography 31 (11), 1809-1818, 2004 | 229 | 2004 |
| Austral bird migrants in Paraguay FE Hayes, PA Scharf, RS Ridgely The Condor 96 (1), 83-97, 1994 | 96 | 1994 |
| Definitions for migrant birds: what is a Neotropical migrant? FE Hayes Auk 112 (2), 521-523, 1995 | 83 | 1995 |
| Seasonality, habitat use, and flock sizes of shorebirds at the Bahia de Asuncion, Paraguay FE Hayes, JA Fox Wilson Bulletin, 637-649, 1991 | 57 | 1991 |
| Antipredator behavior of recently metamorphosed toads (Bufo a. americanus) during encounters with garter snakes (Thamnophis s. sirtalis) FE Hayes Copeia, 1011-1015, 1989 | 40 | 1989 |
| North American bird migrants in Paraguay FE Hayes, SM Goodman, JA Fox, TG Tamayo, NE López The Condor 92 (4), 947-960, 1990 | 35 | 1990 |
| Birds of Trinidad and Tobago M Kenefick, R Restall, F Hayes Bloomsbury Publishing, 2013 | 34 | 2013 |
| Geographic variation, hybridization, and the leapfrog pattern of evolution in the Suiriri Flycatcher (Suiriri suiriri) complex FE Hayes Auk 118 (2), 457-471, 2001 | 28 | 2001 |
| Seasonal and geographical variation in resident waterbird populations along the Paraguay River FE Hayes El Hornero 14 (3), 14-26, 1996 | 25 | 1996 |
| Avian use of vernal pools at the Santa Rosa Plateau Preserve, Santa Ana Mountains, California WS Baker, FE Hayes, EW Lathrop Southwestern Naturalist, 392-403, 1992 | 23 | 1992 |
| Raptor densities along the Paraguay river: seasonal, geographical and time of day variation FE Hayes Journal of Raptor Research 25, 101-108, 1991 | 22 | 1991 |
| Selection by two decapod crabs (Percnon gibbesi and Stenorhynchus seticornis) associating with an urchin (Diadema antillarum) at Tobago, West Indies FE Hayes, VL Joseph, HS Gurley, BYY Wong Bulletin of Marine Science 63 (1), 241-247, 1998 | 21 | 1998 |
| Diversity, abundance and seasonality of birds in a Caribbean pine plantation and native broad-leaved forest at Trinidad, West Indies FE Hayes, I Samad Bird Conservation International 8 (1), 67-87, 1998 | 20 | 1998 |
| Vertebrates in the diet of woodcreepers (Aves: Dendrocolaptidae) FE Hayes, J Escobar Argaña El Hornero 13 (02), 162-165, 1990 | 19* | 1990 |
| Human envenomation from the bite of the Eastern Garter Snake, Thamnophis s. sirtalis (Serpentes: Colubridae) WK Hayes, FE Hayes Toxicon 23 (4), 719-721, 1985 | 19 | 1985 |
| Breeding season and clutch size of birds at Sapucái, Departamento Paraguarí, Paraguay FE Hayes Boletín del Museo Nacional de Historia del Paraguay 18, 77-97, 2014 | 18 | 2014 |
| Decapod crustaceans associating with the sea urchin Diadema antillarum in the Virgin Islands FE Hayes Nauplius 15 (2), 81-85, 2007 | 17 | 2007 |
| Trans-Atlantic vagrancy of Palearctic birds in Trinidad and Tobago M Kenefick, FE Hayes Journal of Caribbean Ornithology 19 (2), 61-72, 2006 | 17 | 2006 |
| First report of the Trinidad and Tobago Rare Bird Committee F Hayes, G White Living World, Journal of the Trinidad and Tobago Field Naturalists' Club, 39-45, 2000 | 16 | 2000 |
