INTRODUCTION. 



ERRATA. 



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



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

 Meadow Buntinj^-' before 'the Ciineate-lailed Gull.' 



,, 38, line 2 — For ''leucocyana,' read '■wolfii.' 



,, 41, headline — /^o?* ' Redbreast,' r^rtr/ ' Red-spotted Bluethroal." 



,, 41, line 4 — Tills example, obtained at Kilnsea, 8th October, 

 1903, may possibly be referable to C. ivolfi. 



,, 560, 3rd line fiom bottom -For ' Houbraas ' read ' Houbaras. 



,, 717, nth line from bottom — For'' 130,000' read '80,000.' 



ILLI STRATIONS. 



Plate facing page 108 — Add ' Nest ' afler ' Great Tit's. 



,, M 610 — 'Nests of Dunlin, north-west Yorkshire,' <>w»'/ 



'Teesmoiith.' 



tract of mountainous country, ascending to 2,596 feet 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. b 



