Science Advances

Supplementary Materials

This PDF file includes:

  • Methods and Analyses
  • Fig. S1. Cone-shaped enemy-free space surrounding three representative active hawk nests.
  • Fig. S2. Photo of a hummingbird nest in situ showing variables measured to quantify nest microsite selection.
  • Fig. S3. Diagrammatic illustration of variables measured at each hummingbird nest to quantify nest site selection within the substrate tree.
  • Table S1. A review of the literature on protective nesting associations in birds indicating the species involved (if known) and the hypothesized mechanism by which the protected species benefits.
  • References (28–66)

Download PDF

Files in this Data Supplement: