Judging by the light on that tree trunk in the back and the blue hue to the shadows, either early morning or late day. Pretty good shot for low-light, without even the benefit of fill flash (no shine spot on her nose or her eyes). A little bit of wariness in her eyes, probably wondering what the nature of your visit is and what that black thing in you hands is for, otherwise quite calm. That makes for an excellent wildlife subject; one that will let you get her good side, not her rear end.
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