Here, that act is “to take” which, even without a mens rea, is not something that is done unknowingly or involuntarily. Accordingly, requiring defendants, as an element of an MBTA misdemeanor crime, to take an affirmative action to cause migratory bird deaths is consistent with the imposition of strict liability. See, e.g., United States v. Morgan, 311 F.3d 611, 616 (5th Cir.2002).