Ivory gull narrower os pubis, and potentially more flexibility in skull kinetic structure. Structurally, it is most similar to the kittiwakes; however, recent genetic analysis based on mtDNA sequences shows that Sabine's gull is the ivory gull's closest relative, followed by the kittiwakes, with Ross's gull and swallow-tailed gull sharing a clade with these species. "Pagophila" is maintained as a unique genus because of the bird’s morphological, behavioral and ecological differences from these species. Colloquial names from Newfoundland include slob gull (from "slob", a local name for drift ice) and ice partridge, from a vague resemblance to a ptarmigan. This species is
Four Letter Word (Kim Wilde song) of her early hits together, including the pop classic "Kids in America)". It became her third consecutive UK Top 10 single from "Close", reaching number 6. An extended version as well as an acoustic remix of "Four Letter Word" were released as a 12" and CD-single. Four Letter Word (Kim Wilde song) "Four Letter Word" is the fourth single from the Kim Wilde album "Close". It was released at the end of 1988 — the year that had seen Wilde release a best-selling album, have four international hits (including the chart-topping "You Came") and support Michael Jackson on the European