The elevated mist-net frame - Supporting Information: Appendices S1-S4

Summary  Classic standard mist-netting limits sampling to
understory birds flying <3 m above ground-level. Methodological
innovations targeting higher strata birds (and bats) are important for
ecological studies, particularly in tropical forests. I present and
evaluate a method of applying elevated mist-net frames (EMF) up to ~25-30
m. I designed detachable mobile alloy frames for standard-sized 3×6 m
mist-nets, weighing ~11 kg including fittings, and suspended by 3-point
cable-wire mounting. State-of-the-art archery and fishing gear are
employed for securing anchor-lines, with hoisting applied by pulley, ropes
and guys. EMF is assembled and detached by 2-3 team members within 15-20
minutes, and up-down hoisting lasts 1-3 minutes. EMF excludes
tree-climbing and arboreal platforms, through versatile manoeuvring in
lightly-cluttered naturally open corridors. EMF costs are source and
quantity dependent, and feasible to institutions and grant beneficiaries.
EMF is a workable alternative or supplement to existing elevated
mist-netting applying poles, ropes and pulleys, owing to strength and
durability, replicable construction, and versatile manoeuvrability in
upper strata. The EMF-design demonstrates favourable prospects for
high-tech development, thus further innovations are recommended.