Sparrow Research Archives
Online

Vellenga, J. ( 1916 )
"Huismusschen te Rotterdam".
Article on roosting House Sparrows, anecdote, published in magazine Ardea.

Salm. M. (2007 )
"House Sparrow (Passer domesticus) density explained with the factors food availability, breeding site availability, shelter availability and predation pressure as limiting factors".
Never published research, 2007 bachelorsdegree at the Center for Environmental Sciences, University Leiden.

It is a PHD thesis, published in 1972,
written by David G. Dawson,
named "The breeding ecology of House Sparrows".

The study was aimed at finding as many influences on the breeding succes of the House Sparrow as possible. With special attention to the adaptive nature of their breeding strategy.