| House Martin (Delichon urbicum) | | 2005-03-10 | 2004-05-02 | Prestegardsmoen (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2005-03-09 | 1999-04-17 | Flesland (Vestland, Norway) |
| House Martin (Delichon urbicum) | | 2005-03-09 | 1999-05-07 | Flesland (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2005-02-17 | 2003-04-12 | Finnås (Vestland, Norway) |
| Sand Martin (Riparia riparia) | | 2005-02-16 | 2004-05-15 | Sandvin (Vestland, Norway) |
| Sand Martin (Riparia riparia) | | 2005-02-16 | 2003-05-06 | Sandvin (Vestland, Norway) |
| Sand Martin (Riparia riparia) | | 2005-02-16 | 2002-05-04 | Sandvin (Vestland, Norway) |
| House Martin (Delichon urbicum) | | 2005-02-16 | 2003-05-05 | Sandvin (Vestland, Norway) |
| House Martin (Delichon urbicum) | | 2005-02-16 | 2004-05-15 | Sandvin (Vestland, Norway) |
| House Martin (Delichon urbicum) | | 2005-02-16 | 2002-05-12 | Sandvin (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2005-02-16 | 2002-04-29 | Sandvin (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2005-02-16 | 2004-05-02 | Sandvin (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2005-02-16 | 2003-04-30 | Sandvin (Vestland, Norway) |
| Sand Martin (Riparia riparia) | | 2005-02-15 | 2003-03-26 | Lonevåg (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2005-02-14 | 2002-04-21 | Fitjar (Vestland, Norway) |
| Sand Martin (Riparia riparia) | | 2005-02-14 | 2002-04-23 | Voss (Vestland, Norway) |
| House Martin (Delichon urbicum) | | 2005-02-14 | 2002-04-28 | Vestbøstadtjønna (Vestland, Norway) |
| Sand Martin (Riparia riparia) | | 2005-02-12 | 2004-04-15 | Prestegardsmoen (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2005-02-12 | 2004-04-17 | Herdla (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2004-06-23 | 1997-05-23 | Rogne (Innlandet, Norway) |
| Barn Swallow (Hirundo rustica) | | 2004-06-23 | 2004-05-23 | Rogne (Innlandet, Norway) |
| Barn Swallow (Hirundo rustica) | | 2004-06-22 | 2004-05-07 | Skog (Buskerud, Norway) |
| Barn Swallow (Hirundo rustica) | | 2004-06-17 | 2004-05-01 | Norheimsund (Vestland, Norway) |
| Sand Martin (Riparia riparia) | | 2004-06-14 | 2004-06-14 | Kjeldevatnet (Vestland, Norway) |
| House Martin (Delichon urbicum) | | 2004-06-11 | 2004-06-11 | Kjeldevatnet (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2004-06-09 | 2004-06-09 | Øysand (Trøndelag, Norway) |
| Barn Swallow (Hirundo rustica) | | 2004-05-28 | 2004-05-27 | Kjeldevatnet (Vestland, Norway) |
| House Martin (Delichon urbicum) | | 2004-05-26 | 2004-05-26 | Kjeldevatnet (Vestland, Norway) |
| Svalefamilien (Hirundinidae indet.) | | 2004-05-09 | 2004-05-08 | Grindal (Trøndelag, Norway) |
| Barn Swallow (Hirundo rustica) | | 2004-05-06 | 2004-05-03 | Lines (Trøndelag, Norway) |
| House Martin (Delichon urbicum) | | 2004-05-06 | 2004-05-02 | Lokalmiljø (Telemark, Norway) |
| Barn Swallow (Hirundo rustica) | | 2004-05-03 | 2004-05-01 | Hammervatnet (Trøndelag, Norway) |
| Barn Swallow (Hirundo rustica) | | 2004-04-27 | 2004-04-27 | Oterhals (Møre og Romsdal, Norway) |
| House Martin (Delichon urbicum) | | 2004-04-25 | 2004-04-20 | Faret-Gullestad (Agder, Norway) |
| Barn Swallow (Hirundo rustica) | | 2003-09-16 | 2003-05-21 | Rogne (Innlandet, Norway) |
| Barn Swallow (Hirundo rustica) | | 2003-09-16 | 2003-05-21 | Rogne (Innlandet, Norway) |
| House Martin (Delichon urbicum) | | 2003-09-16 | 2003-05-17 | Rogne (Innlandet, Norway) |
| Svalefamilien (Hirundinidae indet.) | | 2003-09-16 | 2003-08-21 | Helsetvatnet (Møre og Romsdal, Norway) |
| Barn Swallow (Hirundo rustica) | | 2003-09-11 | 2003-09-10 | Øysand (Trøndelag, Norway) |
| Barn Swallow (Hirundo rustica) | | 2003-06-03 | 2003-06-03 | Fossevatna naturreservat (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2003-05-26 | 2003-04-24 | Asakmarka (Akershus, Norway) |
| House Martin (Delichon urbicum) | | 2003-05-23 | 2003-05-21 | Kjeldevatnet (Vestland, Norway) |
| House Martin (Delichon urbicum) | | 2003-05-22 | 2003-05-22 | Kjeldevatnet (Vestland, Norway) |
| Sand Martin (Riparia riparia) | | 2003-05-22 | 2003-05-22 | Kjeldevatnet (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2003-05-21 | 2003-05-21 | Kjeldevatnet (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2003-05-16 | 2003-05-14 | Kjeldevatnet (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2003-05-16 | 2003-05-13 | Kjeldevatnet (Vestland, Norway) |
| Barn Swallow (Hirundo rustica) | | 2003-05-16 | 2003-05-15 | Kjeldevatnet (Vestland, Norway) |
| Svalefamilien (Hirundinidae indet.) | | 2003-05-14 | 1995-05-20 | Grindal (Trøndelag, Norway) |
| Svalefamilien (Hirundinidae indet.) | | 2003-05-14 | 2002-05-19 | Grindal (Trøndelag, Norway) |
Sustain.no is provided by the Norwegian Centre for Science Education