FAMILY HIRUNDINIDAE 



5 



KEY TO SPECIES OF HIRUNDINIDAE 



1. Back brown, no trace of blue 2 



Back steel blue or green 5 



2. Undersurface entirely sooty brown, except thighs. 



White-thighed Swallow, Neochelidon tibialis minima, p. 29 

 Undersurface partially white 3 



3. Outer edge of outermost primary serrated ; no distinct breast band. 



Rough-winged Swallow, Stelgidopteryx ruficollis. p. 36 

 Outer edge of outermost primary entire; distinct dark breast band 4 



4. Throat white, total length 125 mm or less. 



Bank Swallow, Riparia riparia riparia. p. 5 

 Throat white, total length 155 mm or more. 



Brown-chested Martin, Progne tapera fusca. p. 27 

 5. Back bright metallic green. 



Violet-green Swallow, Tachycineta thalassina lepida. p. 11 



Back entirely or partly steel blue 6 



6. Undersurface cinnamon-rufous. 



Barn Swallow, Hirundo rustica erythrogaster. p. 13 

 Undersurface white or steel blue 7 



7. Rump buff to brown. 



Cliff Swallow, Petrochelidon pyrrhonota. p. 14 

 Rump steel blue or white 8 



8. Rump white. 



Mangrove Swallow, Tachycineta albilinea. p. 8 

 Rump dark 9 



9. Throat white 10 



Throat steel blue or with brown 11 



10. Larger, total length 130-140 mm. 



Tree Swallow, Tachycineta bicolor. p. 7 



Smaller, total length 110-125 mm. 



Blue-and-white Swallow, Notiochelidon cyanoleuca. p. 32 



11. Undersurface steel blue. 



Purple Martin, Progene subis* male. p. 22 

 Undersurface brown and white 12 



12. Forehead feathers tipped gray or whitish. 



Purple Martin, Progne subis* female, p. 22 



Forehead steel blue or brown. 



Gray-breasted Martin, Progne chalybea chalybea. p. 19 



RIPARIA RIPARIA RIPARIA (Linnaeus): Bank Swallow, 

 Golondrina Barranquera 



Hirundo riparia Linnaeus, Syst. Nat., ed. 10, vol. 1, 1758, p. 192. (Sweden.) 



Small; undersurface white, with a distinct grayish brown band across 

 the lower foreneck and upper breast. 



There is also one specimen record of the Southern Martin, Progne elegans, 

 from Panama. For comparison with P. subis see text, p. 25. 



