1. How come blackbirds and thrushes and pied wagtails are unaffected?

2. Passeridae: true sparrows Prunellidae: accentors Motacillidae: wagtails and pipits Urocynchramidae: Przewalski's finch.

3. Wagtails swooped across my path, and from the mouth of the Eske, curlews called shrilly to one another like owls.

4. The relationships of this species are not well resolved; it belongs to the non-African clade of wagtails, these are confusing in their external morphology, and mtDNA cytochrome b and NADH dehydrogenase subunit 2 sequence data are not able to robustly resolve their relationships.

5. Accentors Siberian Accentor Old World Sparrows House Sparrow Wagtails and Pipits American Pipit Finches and Allies Brambling Evening Grosbeak Pine Grosbeak Gray-crowned Rosy-Finch Black Rosy-Finch House Finch Purple Finch Cassin’s Finch Common Redpoll Hoary Redpoll Red Crossbill Cassia Crossbill White-winged Crossbill Pine Siskin Lesser

6. Within the wagtail genus Motacilla, the white wagtail's closest genetic relatives appear to be other black-and-white wagtails such as the Japanese wagtail, Motacilla grandis, and the white-browed wagtail, Motacilla madaraspatensis (and possibly the Mekong wagtail, Motacilla samveasnae, the phylogenetic position of which is mysterious), with which it appears to form a superspecies.