380 BIRDS OF THE REPUBLIC OF PANAMA PART 2 



2. Breast and abdomen red (males) 3 



Breast gray or brown, only the abdomen red (females) 4 



3. Upper tail coverts greatly elongated, twice or more the length of tail; 



outer rectrices white. 



Quetzal, Pharomachrus mocinno costaricensis, male, p. 381 

 Upper tail coverts equal in length to tail, or slightly longer ; outer rectrices 

 black, in some a white spot at tip. 



Golden-headed quetzal, Pharomachrus pavoninus auriceps, male, p. 386 



4. Breast and sides slightly brownish gray; outer rectrices barred broadly 



with white ; crown green, like back. 



Quetzal, Pharomachrus mocinno costaricensis, female, p. 381 

 Breast and sides brown; outer rectrices only lightly tipped with white; 

 crown golden brown. 



Golden-headed quetzal, Pharomachrus pavoninus auriceps, female, p. 386 



5. Breast and abdomen distinctly red (in one species orange-red) 6 



Breast and abdomen yellow to orange 15 



6. Larger, wing more than 140 mm., culmen more than 21.0 mm 7 



Smaller, wing less than 130 mm., culmen less than 19.0 mm. ; a broad white 



band on the breast in both sexes 14 



7. Three outermost rectrices pure white for one-third or more of distal end. 



Baird's trogon, Trogon bairdii, male, p. 397 

 Outer rectrices not broadly tipped with white 8 



8. Outer pairs of rectrices barred very narrowly with white 9 



Outer rectrices without markings, or with whitish tips and indistinct barring 



and mottling on outer web only 11 



9. Back and neck green, rest of lower surface bright red. 



Lattice-tailed trogon, Trogon clathratus, male, p. 395 



Back, foreneck, and upper breast slate-gray, posterior under surface pale 



red or orange-red 10 



10. Center of breast and sides brown; wing coverts finely mottled with gray, 



tail with very narrow white crossbars. 



Lattice-tailed trogon, Trogon clathratus, female, p. 395 

 Breast and sides wholly dark gray ; secondaries and wing coverts narrowly 

 barred with white ; outer tail feathers strongly barred with white. 



Baird's trogon, Trogon bairdii, female, p. 397 



11. Upper surface metallic green (adult males) 12 



Upper surface slate-gray (adult females) 13 



12. A narrow white band across breast (in some individuals partly concealed). 



Long-tailed trogon, Trogon melanurus macroura, male, p. 393 

 Without a white breast band. 



Massena trogon, Trogon massena hoffmanni, male, p. 388 



13. Lighter gray, especially on breast and head; tail slightly longer than wing; 



bill smaller, narrower. 



Long-tailed trogon, Trogon melanurus macroura, female, p. 393 

 Darker gray, especially on breast and head ; tail slightly shorter than wing ; 

 bill larger, broader. 



Massena trogon, Trogon massena hoffmanni, female, p. 388 



14. Back, breast and central tail feathers green. 



Collared trogon, Trogon collaris, male, p. 404 



