Tasso

I don't think it's hen of the woods. Most likely Bondarzewia berkeleyi; Berkeley's Polypore or Meripilus giganteus, black staining polypore.

Ash tree bolete. http://www.mushroomexpert.com/boletinellus_merulioides.html

Hyanlinus distorts the mushroom so much that a positive ID is impossible. You'd be playing Russian roulette. https://www.connecticutwilderness.com/species/fungi/hypomyces-hyalinus/

Looks like Chlorophyllum molybdites. Poisonous, producing diarrhea and vomiting. See here: http://www.mushroomexpert.com/chlorophyllum_molybdites.html

Actually, they are honey mushrooms. Read this: http://www.mushroomexpert.com/entoloma_abortivum.html

Read this: https://wildmushroomhunting.org/index.php?/topic/2592-how-to-ask-for-help-identifying-mushrooms/

I think this is commonly known as the shaggy bolete, Boletellus ananas.

Here's Dave's post about what to include when asking for IDs. https://wildmushroomhunting.org/index.php?/topic/2592-how-to-ask-for-help-identifying-mushrooms/

Looks like Vascellum curtisii to me. http://www.mushroomexpert.com/vascellum_curtisii.html

So whch one is it? So which one is it?

My guess, and it's only a guess.

I think this is Gyromitra korfii. See here: http://www.mushroomexpert.com/gyromitra_korfii.html

All morels, no imposters.

This site has a wealth of information about foraging and cooking. Here is a link to a test of 3 ways to cook frozen mushrooms. It's for porcini, but might be applicable to oysters. Kind of cold for your neck of the woods. https://fat-of-the-land.blogspot.com/2008/09/great-frozen-porcini-test-part-3.html

FYI, this is NOT a forum for psychedelics. Need more info. Read this:

Yes: http://www.mushroomexpert.com/amanita_muscaria_flavivolvata.html

Watch it on YouTube for nothing: https://www.youtube.com/results?search_query=the+magic+of+mushrooms+bbc+documentary+2016+

Chlorophyllum molybdites, poisonous. http://www.mushroomexpert.com/chlorophyllum_molybdites.html

Need a lot more information. Please read this: https://wildmushroomhunting.org/index.php?/topic/2592-how-to-ask-for-help-identifying-mushrooms/

Looks like Helvella crispa to me. http://www.mushroomexpert.com/helvella_crispa.html

Extreme danger is exactly right. I see you're in Scotland. Read what happened to the "Horse Whisperer" author in Scotland a number of years ago. http://www.dailymail.co.uk/femail/article-1308997/The-deadly-dish-poisoned-lives-How-The-Horse-Whisperers-Nicholas-Evans-killed-family-wild-mushrooms.html

I think it's an old chicken with mold all over it.

I believe it's Hericium corraloides. http://www.mushroomexpert.com/hericium_coralloides.html It might still be good to eat, but when they start to yellow like that they can be bitter.

Need to see more. Please read this:

Definitely not a hen. Please read this post: https://wildmushroomhunting.org/index.php?/topic/2592-how-to-ask-for-help-identifying-mushrooms/