Figure 10.5 Seasonal appearance of four species of irregular visitors to Britain, as determined from the number of records in different weeks of the year. All four are more or less restricted to migration seasons, and the two warblers only in autumn. From records published in British Birds.
with more frequent summer-autumn dispersive visitors, such as Brown Pelicans Pelecanus occidentalis, Laughing Gulls Larus atricilla, Wood Storks Mycteria americana, White Ibises Eudocimus albus, Roseate Spoonbills Ajaia ajaia and others.
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