Black-headed Gull - C. ridibundus

Black-headed Gull Chroicocephalus ridibundus (last update: 29-05-2011)
Moderators: Tim Audenaert Maarten van Kleinwee Home BHG 1cy May BHG 1cy June BHG 1cy July BHG 1cy August BHG 1cy September BHG 1cy October BHG 1cy November BHG 1cy December BHG 2cy January BHG 2cy Febuary BHG 2cy March BHG 2cy April BHG 2cy May BHG 2cy June BHG 2cy July BHG 2cy August BHG 2cy September BHG 2cy October BHG 2cy November BHG 2cy December BHG adult January BHG adult Febuary BHG adult March BHG adult April BHG adult May BHG adult June BHG adult July BHG adult August BHG adult September BHG adult October BHG adult November BHG adult December Hybrids	Black-headed Gull x Ring-billed Gull Black-headed Gull breeds scarcely in the eastern part of North America (Canada, United States). Hybridization of Black-headed Gull and Ring-billed Gull is documented in Canada (mixed pair Black-headed x Ring-billed Gull, Wesseloh et al, 1986). In the state of New York (USA) an adult hybrid was recorded in February 2002. References Wesseloh D.V., Mineau P. (1986). Apparent hybrid common Balck-headed Gull nesting on Lake Ontario. American Birds, Spring p 18-20.	*Black-headed Gull x Ring-billed Gull* 22 February 2002, Woodburne, USA. Photo: Jay and Kevin McGowan.
		*Black-headed Gull x Ring-billed Gull* 22 February 2002, Woodburne, USA. Photo: Jay and Kevin McGowan.
		*Black-headed Gull x Ring-billed Gull* 22 February 2002, Woodburne, USA. Photo: Jay and Kevin McGowan.

Black-headed Gull Chroicocephalus ridibundus

Black-headed Gull x Ring-billed Gull