20 



TERMINOLOGY 



onwards prior to leaving our shores, but after that they may 

 possibly betake themselves aloft to continue their journey. 



The speed at which Birds travel during Migration is a matter 

 on which very diverse opinions have been and are held ; but the 

 hig-hest estimates, such as those of the late Herr Gatke (who 



lore 



crown {lerie.x) 



hind-head {occipuly 

 ear coverts , auriciilars, 



nape {ttucha)-' 



hind-neck [cervix)- 



back (dorsum) 



scapulars." 



rump {uropygium) 



upper-tail coverts 



'.orbit ! forehead (/roiis) 



' .nostril 

 cere 

 ..ridge (cntmen) 



ma.xilla 



..cutting edges {/omidj 



\ '-mandible 

 ••. 'gonys 



throat {^ula) 

 ..'-lesser coverts 



'fore-neck (jugulitm) 

 - median covertr. 

 ■ bastard wing [alula) 



.. greater coverts 



breast (pectus) 



secondaries (remigts secundori!) 



6. — A Falcon. To shew the iioiauuclatui-e of the e.\teru<il parts, 



would allow even 150 miles an hour), can scarcely be otherwise 

 than exaggerations; for there is no evidence of any but exceptional 

 performances at such rates, and there is really no reason to suppose 

 that Birds can fly faster at a higher elevation than at a lower. 



Terminology, — The annexed figure explains the nomenclature 

 of most of the outward parts of a Bird, but some further explana- 

 tions may be given, as below : — 



