Cranswick, P.A., Bowler, J.M., Einarsson, O., Gardarsson, A., McElwaine, J.G., Merne, O.J., Rees, E.C. and Wells, J.H. (1996). Numbers of Whooper Swan Cygnus cygnus in Iceland, Ireland and Britain in January 1995: results of the international Whooper Swan census. Wildfowl 47: 23-36.
Crowe, O. (2005). Ireland's Wetlands and their Waterbirds: Status and Distribution. BirdWatch Ireland.
Crowe, O., Austin, G.A., Colhoun, K., Cranswick P.A., Kershaw, M. and Musgrove, A.J. (2008a). Estimates and trends of waterbirds numbers wintering in Ireland 1994/95 to 2003/04. Bird Study 55: 66-77.
Crowe, O., Webb, G., Collins, E. and Smiddy, P. (2008b). Waterways Bird Survey. NPWS, OPW and BirdWatch Ireland Report.
Hunt, J., Derwin, J., Coveney, J. and Newton, S. (2000). Republic of Ireland. Pp. 365-416 in Heath, M.F. and Evans, M.I. (eds). Important Bird Areas in Europe: Priority Sites for Conservation 1: Northern Europe. Cambridge, UK: BirdLife International (BirdLife Conservation Series No. 8).
Irish Wetland Birds Survey (I-WeBS) Database, 1994/95-2000/01. BirdWatch Ireland, Dublin.
McGarrigle, M.L., Bowman, J.J., Clabby, K.J., Lucey, J., Cunningham, P., MacCarthaigh, M., Keegan, M., Cantrell, B., Lehane, M., Clenaghan, C. and Toner, P.F. (2002). Water Quality in Ireland 1998-2000. Environmental Protection Agency, Wexford.
Merne, O.J. (1989). Important bird areas in the Republic of Ireland. In: Grimmett, R.F.A. and Jones, T.A. (eds). Important Bird Areas in Europe. ICBP Technical Publication No. 9, Cambridge.
Robinson, J.A., Colhoun, K., McElwaine, J.G. and Rees, E.C. (2004). Whooper Swans Cygnus cygnus (Iceland Population) in Britain and Ireland 1960/61 - 1999/2000. Waterbird Review Series, The Wildfowl & Wetland Trust/Joint Nature Conservation Committee, Slimbridge.
Sheppard, R. (1993). Ireland's Wetland Wealth, IWC, Dublin. |