Complex sentence: Some depictions and descriptions have shown the legs of Mauritius Blue Pigeons as red, like those of the Madagascar Blue Pigeon; the legs of the Paris specimen have been painted red, presumably based on such accounts, when the original colour had faded.
Split into simpler sentences: Some depictions and descriptions have shown the legs of Mauritius Blue Pigeons as red, like those of the Madagascar Blue Pigeon. The legs of the Paris specimen have been painted red, presumably based on such accounts, when the original colour had faded.