Talk:House sparrow/to do


 * expand lead
 * Fix on British English, copyedit
 * Add alt texts for images
 * Expand description (more on plumage etc.)
 * Add info on population estimates, maybe including for North America – text formerly gave estimate from 1940s
 * Add details on evolution and fossil record (some should go at Passer)
 * How long is the copulation usually? How many ejaculatory thrusts are there? (from GAN)
 * How do helpers around the nest help? (from GAN)
 * How can mated birds recognise each other (from GAN)
 * Introduced; but why?