Is resource specialization the key?: some, but not all Red Crossbill call types associate with their key conifers in a diverse North American landscape
Red Crossbills (Fringillidae: Loxia curvirostra) are finches specialized to pry open cones and extract seeds of coniferous trees. Within the species, variable bill morphology may provide more efficient foraging on some species of conifers than others. Subgroups also have distinctly different contact...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-02-01
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| Series: | Frontiers in Bird Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fbirs.2024.1321583/full |