The Common House Sparrow is also Fascinating
- Female sparrows preferentially select males with larger black bibs. This article outlines how the examination of a collection of 1000 skins helped explain why this should be so.
- http://www.birdresearch.dk/gb/gsparrow.htm

Red-headed Weaver (Anaplectes rubriceps)
- Photograph of this species plus brief facts.
- http://www.kenyabirds.org.uk/red-headed_weaver.htm

Missing! - Ten Million House Sparrows
- Information on House Sparrow decline from The British Trust for Ornithology.
- http://www.bto.org/appeals/house_sparrow.htm

In Europe, the Case of the Missing Sparrows
- Article from the Christian Science Monitor about the decline of House Sparrows.
- http://www.csmonitor.com/2002/1227/p01s03-woeu.html

Passer domesticus
- New Zealand introduced bird, the House Sparrow.
- http://nzbirds.com/Sparrow.html