. The birds of the British Isles and their eggs . I PL 9. C 29. JACKDAW. 29 this season some, thought to be British-bred birds, leave oursouth coast ; return north and eastward migrations occur inspring. The Jackdaw, a much smaller bird than the Rook, with whichit freely consorts, has a proportionately shorter and straighterbeak, and by some authorities is placed in a separate genus,Colceics. On the ground its movements are quick, almostfussy ; it walks with a strut, jerking its body ; its wing-beats inflight are rapid, readily distinguishable from those of the flight is l
. The birds of the British Isles and their eggs . I PL 9. C 29. JACKDAW. 29 this season some, thought to be British-bred birds, leave oursouth coast ; return north and eastward migrations occur inspring. The Jackdaw, a much smaller bird than the Rook, with whichit freely consorts, has a proportionately shorter and straighterbeak, and by some authorities is placed in a separate genus,Colceics. On the ground its movements are quick, almostfussy ; it walks with a strut, jerking its body ; its wing-beats inflight are rapid, readily distinguishable from those of the flight is less direct, more erratic, and it frequently indulgesin aerial display, especially at its breeding-place ; here the birdsof a colony will engage in combined evolutions without con-certed action ; each individual dodges, swerves, turns, twists ordives at pleasure. These sociable performances, most notice-able in the evening, are accompanied by incessant clamour, thesharp and shrill cries of tchack or cae blending indehghtful harmony. The alarm not
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