Willis, I, Christensen, S, Willis, I, Christensen, S, Christensen, S & Willis, I / March 2014 – vol. 65, issue 6–247 We now turn to the four harriers Circus, a genus associated with extensive reedbeds, cornfields and moorland, not requiring trees or cliffs as do most raptors. Three--Marsh C. aeruginosas, Hen C. cyanms and Montagu's C. pjgargus--are comparatively common, but the Pallid C. macrourus is much rarer (mainly east Europe). All invariably soar and normally glide with wings raised in a shallow V, and this... This article is only available to registered users.To read more, please log in or purchase a subscription.