Bird dropping (bird faeces) in contact with metals may affect the corrosion of these metals when exposed to a certain environment. This dataset contains the experimental characterisation of the effect chicken excrements have on a carbon steel, AISI316 stainless steel, duplex stainless steel, super duplex stainless steel, a carbon steel coated with thermally sprayed aluminium (TSA) and aluminium EN AW6082. The following experimental results are included in this dataset: (i) results of electrochemical experiments (open circuit potential measurements, polarisation resistance measurements, cathodic and anodic polarisation curves in the presence and absence of bird droppings) in an electrolyte close to synthetic seawater but without some minor components, at pH 8.9; (ii) photos of samples before and after different exposures in a salt spray chamber; (iii) images of samples after exposure to a salt spray test for given times up to 692 h (29 days); (iv) Raman spectra recorded in a confocal microscope after exposure to a salt spray test; and (v) infrared (IR) spectra recorded after exposure to a salt spray test. In addition, (vi) the study also contains mass loss (weight loss) data, which is in full included in the supporting information of the accompanying article, because of its simplicity, and is not included here. The dataset contains ASCII files and images in JPEG and PNG formats with descriptive filenames and is structured in subfolders indicating the respective methods. A detailed interpretation of the results, and the experimental details associated with the dataset is available in the associated article.