Reverse Migration of the Wood Pigeons and electromagnetic emissions, before the Mw 3.7 earthquake occurred in Visso-Macerata, Cen- tral Italy on October 18, 2021 Author: Daniele Cataldi 1 ; Enrico Cavina 2 ; Gabriele Cataldi 1 ; Valentino Straser 3 1 – Radio Emissions Project, Lariano, Rome (I); 2 – Club Italiano del Colombaccio (I); 3 – De- partment of Science and Environment UPKL, Brussels (B). E-mail: daniele77c@gmail.com 1 ; ecavinaster@gmail.com 2 ; valentino.straser@gmail.com 3 . DOI: 10.26821/IJSRC.10.1.2022.100106 ABSTRACT On October 18, 2021, an earthquake of magnitude Mw 3.7 occurred at 12:54:17 (UTC) 2 km East from Visso, Macerata, Italy, with geographical coordinates (lat, lon) 42.929, 13.113 and at one depth of 10 km. This earthquake had been preceded a few days by a se- ries of electromagnetic signals coming from the seismic epicenter and its immediate vicinity. In the same temporal context, an anomalous behavior of the Wood Pigeons was observed, which were not able to orient themselves autonomously to proceed in the S-SW direction towards the wintering areas mainly Corsica, Sardinia, the Iberian Peninsula, North Africa, after/ during the crossing of the Italian peninsula. Also in this case the anomalous behavior of these birds occurred a few days before the earthquake. In this study, the group of researchers verified all the data re- lating to the natural electromagnetic variation to un- derstand if there is a clear relationship between the anomalous behavior of these migratory birds and the electromagnetic pre-seismic phenomenon. Keywords: Wood Pigeons, Earthquake Prevision, Re- verse Migration, Seismic Precursors, RDF. 1 - PREMISE Some scientific studies [1] [2] [3] [4] highlighted the possibility that birds can also orient themselves by means of geomagnetic fields of natural origin, which permeate the natural environment. This orientation me- chanism possessed by them, manages to make them orient even at a long distance. 2 - METHOD AND DATA The data considered in this study examines the data from the Italian RDF network and the behavior of the Wood Pigeons, observed a few days before the seismic event that occurred in Visso, Macerata, Italy, of magni- tude Mw 3.7. In this case, we will first consider the elec- tromagnetic monitoring data and then the behavioral data of the Wood Pigeons. 2.1 – RADIO DIRECTION FINDING DATA The RDF (Radio Direction Finding) type electromagne- tic monitoring system is a technology based on the use of a mathematical algorithm (therefore it is necessary to use a computer) through which it is possible to establish which is the azimuth direction (of origin) of an electro- magnetic signal when this is picked up by two aligned loop antennas orthogonally to each other. By using two or more monitoring stations equipped with this techno- logy it is possible to "triangulate" a determined electro- magnetic source and understand in which geographical area it is located. The authors, since 2017, have created