*** Comparative study of crows in urban context - Tartu - Paris project (2021-2023) *** Author: P.S. Delahaye Semiotics Department, University of Tartu, Estonia Corresponding author: P.S. Delahaye Contact Information: pauline.suzanne.delahaye@ut.ee or delahayepauline@gmail.com ***General Introduction*** This dataset contains data collected (and their analysis) during cohabitation project at Tartu University, as part of Pauline Suzanne Delahaye post-doctoral project (MOBJD1010, 10/2021-09/2023): It is being made public in order for other researchers to use this data in their own work. This colelction contains two different categories of files: -work data, such as survey raw data, interviews transcriptions and fields observations -analysis and deliverables regarding these work data, organized by nature (Research - Academic - Popularization) and category (Research: Deliverable or Milestone report; Academic : Conference or International; Popularization: Communication, Dissemination or Exploitation). The data in this data set was collected in Tartu, Estonia, from October 2021 to September 2023. Some comparative data were collected in Paris, France, and are identified as such in the dataset. ***Purpose of the project*** The purpose of this project was to investigate the cohabitation between liminals species (here Corvus cornix, Corvus frugilegus, Corvus corone and Coloeus monedula) and humans in an urban context (here Tartu, Estonia, with a comparative work in Paris, France). ***Description of the data in this data set*** The observations data included in this set have been organized by place of collection and period of the year, following the nomenclature standard: CITY_SEASON_DATE_NATUREnumber CITY: P or T (Paris or Tartu), SEASON: A, SM, SP, W; DATE: YYYYMMDD; NATURE: P or R (picture or video rush)