Not quite zoo related but please be aware that ALL RSPB reserve centres and ALL hides are now closed but access to the reserves remain open.
Similar line with botanic gardens (they're good for casual birding and getting out and about, so I'll put this here as an aside). As far as I can tell, most, if not all, botanic gardens are remaining open, and all seem to be waiving entry fees and making themselves free to enter. Cafes are becoming take-away only, or spreading tables out to the gardens, to provide for social distancing. Glasshouses are closing, as is to be expected, but otherwise, for now, botanic gardens are providing another vital place for fresh air, open space, and a place to see that life and nature endure