1. PALUDOUS - anagram OPUS around A "LUD" (variant of "Lord"), meaning marshy or inhabitant of marshy areas. My first thought was PALUSTRE, which is quite a common specific name applied to plants growing in marshes, for example Equisetum palustre
2. PRAISERS - leading Pig + RAISERS for "breeders", meaning "extollers". (I don't think I'll say what my first idea was!)
3. PTARMIGAN - a grouse, and also the codename for a battlefield communication system - see:
http://en.wikipedia.org/wiki/Army_Communications_and_Information_Systems_(United_Kingdom)#Ptarmigan
4. THERE AND THEN - subtractive anagram "entering the band he" without "being".
5. MANDARIN - hidden word.