Parus

Eck, Siegfried, 2006, The Palaearctic Titmouse Species (Aves: Paridae: Parus sensu lato) — A current survey *, Zootaxa 1325, pp. 7-54 : 23

2. Parus [c.] caeruleus

P. caeruleus obscurus PRAZá K, 1894 [loc. typ. restr. Lake District, England]; P. caeruleus caeruleus LINN., 1758 [ Sweden]; P. caeruleus ogliastrae HARTERT, 1905 [Lanusei, Ogliastra/Sardinia]; P. caeruleus balearicus V. JORDANS, 1913 [Valldemosa, Majorca]; P. caeruleus calamensis PARROT, 1908 [Calamata, S.Peloponnese]; P. caeruleus orientalis (ZARUDNY & LOUDON, 1905) [loc. typ. restr. Orenburg]; Parus caeruleus satunini (ZARUDNY, 1908) [Lenkoran and Kumbaschinsk]; P. caeruleus raddei ZARUDNY, 1908 [Astrabad, Masanderan and Gilan/N Iran]; P. caeruleus persicus BLANFORD, 1873 [oak forests near Shiraz, S Iran].

The population group: P 10 obscurus, caeruleus , ogliastrae, balearicus, calamensis, orientalis, satunini, raddei, persicus; Europe, SW Asia. – Fig. Quinn: Plate 29: 92a–d, in part.

‘* The population differences reside in the size, plumage shading and bill thickness. On the British Isles very dark, in E Europe very pale; no clinal colour variation in the remaining regions.