Citation
Chamberlain, D.E., Vickery, J.A., Glue, D.E., Robinson, R.A., Conway, G.J., Woodburn, R.J.W. & Cannon, A.R. 2005. Annual and seasonal trends in the use of garden feeders by birds in winter. Ibis 147: 575. doi:10.1111/j.1474-919x.2005.00430.x