Data on avian abundance in phases and the difference in abundance between phases (Appendix S1) and cover and aspen stem density in phases and difference between phases (Appendix S2) are available online. The authors are solely responsible for the content and functionality of these materials. Queries (other than absence of the material) should be directed to the corresponding author.

COBI_1903_sm_Appendix_S1.pdf27KSupporting info item
COBI_1903_sm_Appendix_S2.pdf42KSupporting info item

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