related to Breeding · 22Swallow → Africa, All, Atronanus, Birds, Cecropis, Delichon, First-year, Hirundo, In, Many, Migratory, Mud, Mud-nesting, New World, Old World, Overall, Pairs, Petrochelidon, Ptyonoprogne, Seasonal
related to Taxonomy and systematics · 18Swallow → Constantine Samuel Rafinesque, French, Hirundia, Hirundinidae, Hirundininae, Hirundo, Miocene, New World, Old World, Phylogenetic, Pnoepygidae, Psalidoprocne, Pseudochelidoninae, Some, Sylvioidea, The, The Hirundinidae, Within
related to Distribution and habitat · 17Swallow → Antarctic, Antarctica, Indian Ocean, Land-use, Many, Mascarene, Mauritius, New Zealand, Northern Hemisphere, Pacific, Pacific Ocean, Reunion, Southern Hemisphere, Tahiti, The, They, Two
related to External links · 17Swallow → Alfred, Cambridge University Press, Encyclopædia Britannica, Hirundinidae, Hugh, In Chisholm, Internet Bird CollectionThe, Linzer Biologische Beiträge, Martin, New International Encyclopedia, Newton, Swallows, Texts, The New Student's Reference, Wikisource, Wiktionary-logo-en-v2, Work
related to Diet and feeding · 12Swallow → Acacia, Across, Africa, For, In, Individual, Niche, Similar, Species, The, They, Where
related to Behaviour and ecology · 11Swallow → Colonial, If, In, Nigeria, Nonsocial, Outside, Some, Swallows, The, These, This
related to Relationship with humans · 11Swallow → Because, Elder, Heungbu, Korean, Nolbu, Pliny, Roman, So, Swallows, The, There
related to Status and conservation · 11Swallow → African, As, Bahama, Hispaniola, Jamaica, Southeast Asia, Species, Thailand, The, This, Two
related to Fossil record · 7Swallow → Early Miocene, Hirundinidae, It, Miocene, Miochelidon, Siberia, The
related to Description · 5Swallow → Swallows, The, The Hirundinidae, Their, They
