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Message: <blockquote data-quote="Acanthis" data-source="post: 1244319" data-attributes="member: 5750">As with Eurasian/European and African Blue Tits though they were assumed to be sister forms, when in fact they're more like first cousins.I see the various canarian tits are up for splitting. So I suppose "Ultramarine" Tit (keeping the Cyanistes colour theme going <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" /> ) really may only apply to the mainland forms + 'degener' of Fuerteventura.Richard, this morning I've been enjoying looking through what must have been a whole lot of work, your Holarctic listing site. :t:I see you use the conservative Voous sequence. Aside from long-term stability what do you see as the benefits of using this sequence?Personally I'm torn between Voous with its useful, logical though arguably out-of-date sequence, and the kind of responsive up-to-date sequences as created by Don Roberson and John Boyd.</blockquote>