10.6084/m9.figshare.4982654.v1 Marco KleinHeerenbrink Marco KleinHeerenbrink L. Christoffer Johansson L. Christoffer Johansson Anders Hedenström Anders Hedenström Velocity field data Trefftz-plane measurement in gliding flight from Multi-cored vortices support function of slotted wing tips of birds in gliding and flapping flight The Royal Society 2017 animal flight slotted wing tips separated outer primary feathers flight efficiency jackdaw Corvus monedula wind tunnel 2017-05-08 10:41:11 Dataset https://rs.figshare.com/articles/dataset/Velocity_field_data_Trefftz-plane_measurement_in_gliding_flight_from_Multi-cored_vortices_support_function_of_slotted_wing_tips_of_birds_in_gliding_and_flapping_flight/4982654 Vector data of figure 1b in tab separated text format (y [mm], z [mm], v [m/s], w [m/s])