In poor light, blue swallows appear almost black and therefore can be mistaken for black saw-wing swallows (Psalidoprocne spp.) which occur throughout its breeding range.
NYPD Blue | Toronto Blue Jays | Blue Peter | Blue | Blue Ridge Mountains | Blue Öyster Cult | Blue Note Records | Blue Heelers | Pokémon Red and Blue | Winnipeg Blue Bombers | Blue Nile | Blue's Clues | ''Pokémon Red'' and ''Blue'' | Blue Man Group | Vida Blue | The Blue Danube | Rhapsody in Blue | blue plaque | Blue Mountain State | Blue Cheer | Blue Bloods | Blue Beetle | Ateneo Blue Eagles | Project Blue Book | Blue Hill, Maine | Steve Swallow | Operation Blue Star | Kind of Blue | Blue Bloods (TV series) | Blue Angels |
Ko Joo-yeon (born February 22, 1994) is a South Korean actress who has gained attention in the Korean film industry for her roles in Blue Swallow (2005) and The Fox Family (2006).