2.3 Insect Sampling and Home range delineation
To determine if GFWO were selecting nesting sites and home range sizes
based on available insects, we compared home range sizes to the
available insect biomass within each sample site. Home range size was
estimated by constructing minimum convex polygons (MCPs) on a randomly
chosen subset of the home ranges (n = 24). We constructed MCPs by
recording male movements over four, 30-minute visits that began after
observing a male leave their nest (Dudley &
Saab, 2007). We recorded 120 observation points for each male and
built MCPs using the minimum bounding geometry tool in ArcGIS version
10.3 (Environmental Systems Research Institute, Redlands, CA, USA)
Within the same subset of home ranges, along with the associated
unoccupied sites, we quantified the availability of insects with an
array of 11 sweep net sampling locations from the center of the site (0
m) outwards in 15 m increments to 150 m (see Figure S2), visiting each
site once per week from May to mid-July 2019 (Doxon, Davis, &
Fuhlendorf, 2011). We sorted the insects by order, dried them using an
Elite Eliminator Heater set at 55°C, and weighed them every 24 hours
until their mass stabilized.