Wildlife Spotting

Chlorophyllum molybdites is a big mushroom, almost as big as Macolepiota procera... this doesn't look like that, plus Chlorophyllum molybdites has greenish gills and I don't know why I would bet that this one has white gills. It could as well be Lepiota cristata

Nah, it is too robust and the scale texture is wrong. It looks more like Chlorophyllum molybdites to me, but it's likely an exotic species which isn't well covered in European and North America guides.

I think this is Lepiota Castanea but I'm not sure.

Some kind of Lepiotoid. Likely a Chlorophyllum species. http://www.mushroomexpert.com/lepiotoid_clade.html

Awesome fungus.