"One species, L. excubitor, derives it trivial designation from the use made of it as a sentinel by falconers when catching wild Hawks. The mode employed is well described by Hoy (Mag. Nat. Hist. iv. p. 342), but it can only be briefly described here. The Hawk-catcher lies hidden in a hut, watching through a small hole the Butcher-bird which is tethered some yards off, and by its actions not only gives him notice of the approach of a Bird-of-Prey, but also indicates of what kind the stranger is. Thus the sentinel is but slightly troubled at a passing Kite, Eagle, or Buzzard; but beats itself on its perch with screams at the sight of a Harrier, while on the appearance of a Falcon or Sparrow-Hawk it drops with cries of distress into a retreat that has been been considerately prepared for it. On this the falconer, by pulling long strings, displays first one and then a second tethered Pigeon, and the instant the Hawk clutches this last, draws a bow-net over both, thus securing his prize."