Bonaparte's Gull: What a brilliant "Brucie Bonus" as while en-oute to Parkgates hen harrier 2018 rally the small scares gull turned up off Hoylake.
This is a good comparison image showing the Bonaparte's as the slightly smaller of the two and the black-headed still with its fading summer plumage blackened head, the Bonaparte's also has a slim black bill and grey nape.
The English name of the Bonaparte's Gull honors Charles Lucien Bonaparte, who made important contributions to American ornithology while an active member of the Academy of Natural Sciences of Philadelphia during the 1820s.
The last Wirral record was in 2004 & 1st ever Wirral record was in 1979 which also turned up in August.