English  | Français  | Español
Lists:  USA        
Number of species: 80

Select a species:

  
 
:   Clear  

White-winged Crossbill - Loxia leucoptera

Ageing of White-winged Crossbills is complicated by an occasionally incomplete prebasic molt (enabling some individuals to be identified as SY/TY), and an unusually long breeding season. However, sexes are usually distinguishable by overall colour, and in many cases molt limits arising from the preformative molt enable HY/SY birds to be easily recognized.

Quick Tips:

  • Consider the overall plumage - any individuals with distinct pinkish or red are males, but bear in mind that some young males may have limited pink or red and appear largely similar to females
  • Examine the wing - HY/SY birds show a molt limit among the greater coverts or between the greater and primary coverts (more pronounced on males); on AHY/ASY birds lacking such a molt limit, also check the secondaries for a block of up to 6 retained juvenile brown secondaries, which allow for the bird to be recognized as SY/TY
  • Check the tail - HY/SY birds have either relatively uniformly pointed rectrices or a mix of faded and pointed juvenile rectrices and darker, more rounded replaced rectrices; AHY/ASY birds have uniformly rounded rectrices

Species account prepared by McGill Bird Observatory

  • Reference (1)
  • Supplemental (0)
  • Contributed (0)
Click on any image below to bring up the side-by-side comparison tool.
Age / Sex  Image sets 
Hatch year / Female
Mostly brownish-green, with limited yellow; subtle molt limit usually present among the greater coverts and sometimes among the rectrices
Thumbnail - MG2-2581-69122-Loxia_leucoptera_AOU_7_52-3464.jpg Thumbnail - MG2-2581-69122-Loxia_leucoptera_AOU_7_52-3462.jpg Thumbnail - MG2-2581-69122-Loxia_leucoptera_AOU_7_52-3463.jpg
Date: Nov 7

Additional age / sex class descriptions

The following additional age / sex class descriptions were found for this species:
Age / Sex   Age / Sex class description
Second year / Male Mostly brownish, with some orange to pinkish-red plumage; distinct molt limit usually present among the greater coverts and sometimes among the rectrices
After second year / Male Pinkish-red, sometime with some yellow or orange; wing and tail uniform, dark, and with broad and rounded feathers
After second year / Female Mostly brownish to greenish, with limited yellow or red; wing and tail uniform, dark, and with broad and rounded feathers
Juvenile / Unknown Largely brown and heavily streaked, with dull whitish wing bars
Hatch year / Male Mostly brownish, with some orange to pinkish-red plumage; distinct molt limit usually present among the greater coverts and sometimes among the rectrices
Second year / Female Mostly brownish-green, with limited yellow; subtle molt limit usually present among the greater coverts and sometimes among the rectrices
Third year / Male Similar to ASY-M, but with up to 6 retained brown and worn juvenile secondaries
After hatch year / Male Pinkish-red, sometime with some yellow or orange; wing and tail uniform, dark, and with broad and rounded feathers
After hatch year / Female Mostly brownish to greenish, with limited yellow or red; wing and tail uniform, dark, and with broad and rounded feathers
Third year / Female Similar to ASY-F, but with up to 6 retained brown and worn juvenile secondaries
Number of species: 80

Select a species: