This repository contains the data accompanying the paper: Papadopoulou M, Hildenbrandt H, Hemelrijk CK (2023) Diffusion during collective turns in bird flocks under predation. Frontiers in Ecology and Evolution 11 (2023): 1198248. https://doi.org/10.3389/fevo.2023.1198248 The simulated data of bird flocks performing collective turns are generated by the computational model ColT. More information about the model and data can be found in the README file and the connected GitHub repository: https://github.com/marinapapa/ColT-Model/ The empirical data used in the paper are previously published for: Sankey DWE, Storms RF, Musters RJ, Russell WT, Hemelrijk CK, Portugal SJ. (2021) Absence of “selfish herd” dynamics in bird flocks under threat. Current Biology. https://doi.org/10.1016/j.cub.2021.05.009, and can be accessed at the Zenodo repository: https://doi.org/10.5281/zenodo.4993109 This work has been financed to C.K.H. by the Netherlands Organisation for Scientific Research (NWO - https://www.nwo.nl), the Open Technology Programme (OTP), project: 'Preventing bird strikes: Developing RoboFalcons to deter bird flocks' (project number 14723).