The sound in the ponds is "peepers" ; frogs singing in the spring as they come out of their winter hybernation. Here is NE its a welcomed sound of Spring LOL
Too freaky about the Mulder and Scully reference as your motel made me think the exact same thing when I first saw it! 😂 And a bit of Fringe too, if you know that one. If not, you must look that series up!! One of the best 🩶🩶🩶