INTRODUCTION. 



ERRATA. 



Page xxxvii., line 5 For ' 1889* read ' 1899.' 



,, xlii., line 9 For 'Two' read 'Three.' And add the ' Liberian 

 Meadow Bunting"' before 'the Cuneate-tailed Gull.' 



,, 38, line 2 For ''leucocyana,' read ' ivolfii. ' 



>, 41, headline For 'Redbreast,' read ' Red-spotted Bluethroat.' 



,, 41, line 4 This example, obtained at Kilnsea, 8th October, 

 1903, may possibly be referable to C. wolfi. 



> S^o, 3rd line from bottom For ' Houbraas ' read ' Houbaras. 

 i, 717, nth line from bottom For 1 130,000' read * 80,000.' 



ILLUSTRATIONS. 

 Plate facing page 108 Add * Nest ' after * Great Tit's. 



,, 610 'Nests of Dunlin, north-west Yorkshire,' omit 

 'Teesmouth.' 



tract of mountainous country, ascending to 2,590 ieex at 

 the extreme north-western angle of the county, and nowhere 

 descending to a lower elevation than about four hundred 

 feet. A district of lofty hills, thirty-six of which attain 

 an altitude of two thousand feet or more, of extensive stretches 

 of heathery moorlands, of grassy slopes and grey limestone 



VOL. I. 



