Which Yellowhammer subspecies is found across Ireland, the Isle of Man, and Great Britain, excluding the southeast?
Answer
E. c. caliginosa
The subspecies *E. c. caliginosa* is geographically distributed across Ireland, the Isle of Man, and the majority of Great Britain, with the exception being the southeastern portion assigned to the nominate form. This regional variant exhibits subtle physical differences when compared to *E. c. citrinella*; specifically, males of *E. c. caliginosa* are typically smaller and darker overall, feature increased streaking on their backs, and their yellow head coloration possesses a slightly greener tint. The text notes the fragility of this subspecies, exemplified by its recorded disappearance from the Isle of Man.
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