Considering what little shows from the surroundings, presumably those are from Haiti. Will not work as proof that it happens more often than that one case in the USA, just that in their home country some of them do it.
To most people the idea of them killing geese or other big birds from parks will probably be easier to believe as at least geese are also commonly hunted in most countries and generally seen as something suitable to eat.
Voodoo/vodou rituals - I don't know much about them, but animal sacrifices are sometimes included in the practices, although that is said to be rare, and then the animal is later cooked and eaten by the participants. What that woman did rather seems like that, but, since she did it alone, possibly for some sort of black magic version as she was alone, and presumably ate the animal raw? Besides, from what I have read, before an animal is sacrificed it is offered some special food, and if it eats it it is seen as it giving consent to being killed, if it doesn't it will not be sacrificed.
Considering what little shows from the surroundings, presumably those are from Haiti. Will not work as proof that it happens often in the USA, just that in their home country some of them do it.