xxiv GLOSSARY 



Mandibles. Upper and lower, together forming the bill. 



Mantle. Back and wings, except primaries. 



Median line. Middle line, as of crown, back, or breast. 



Migrant. Occurring only during seasonal movements. 



Mirrors. White spots near tip of Gull wing. 



Orbital. Around the eye. 



Primaries. Long flight feathers, on hand of bird. 



Rectrices. Long feathers of tail. 



Resident. Occurring throughout the year. 



Rump. Part of back overlying root of tail. 



Scapulars. Feathers of the scapular region, beside the tertiaries. 



Secondaries. Flight feathers on forearm of bird. 



Speculum. A patch of color on secondaries, of Ducks. 



Summer Visitant. Residing through the summer only. 



Superciliary. Line over eye. 



Tarsus. Part of leg next to foot. 



Tertiaries. Feathers on humerus, or upper arm of bird. 



Vermiculated. Marked with narrow wavy bars. 



Winter Visitant. Residing through the winter only. 



