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GAP Analysis Predicted Distribution Map

Red Crossbill (Loxia curvirostra)

Species Code: LOXCU

Click to enlarge Range map

Legend:
= Core Habitat
= Marginal Habitat

Breeding Range Map
The green area shows the predicted habitats for breeding only. The habitats were identified using 1991 satellite imagery, Breeding Bird Atlas (BBA), other datasets and experts throughout the state, as part of the Washington Gap Analysis Project. Habitats used during non-breeding months and migratory rest-stops were not mapped.

Metadata (Data about data or how the map was made)

Click to enlarge distribution map

Other maps & Information:
  • Breeding Bird Atlas
  • NatureMapping observations
    during breeding season
  • NatureMapping observations
    throughout the year

Common and widespread throughout all coniferous forests. Numbers and distribution are highly variable and dependent on cone crops. When cone crops are low, this species may be absent from seemingly appropriate habitat. It can be abundant when conditions are suitable.

All conifer forests and conifer-dominated wetlands were good habitats in all zones of the state. Mixed forests were adequate.

Formerly, Red Crossbills were thought to represent several subspecies based on geographic variation, but it is now known that the different types represent ecologically distinct units based on feeding preferences, and that they overlap in terms of geographic distribution. It is likely that six types breed in Washington in their preferred habitats. Individual birds from each group may be found foraging on a variety or tree species, but in general each group has a “preferred” tree species. Unfortunately, the types can only be differentiated in the field by call notes, making it difficult to document the breeding status of the different types since there is a large amount of overlap in feeding preferences.

Translated from the Washington Gap Analysis Bird Volume by Uchenna Bright
Text edited by Gussie Litwer
Webpage designed by Dave Lester