abundance abundant clover diverse diversity ecology England english field flora flowers Great Britain green habitat hills landscape meadow natural nature profusion rich South Downs summer Sussex umbellifer verdant wild animal blue cattle cloud cows domesticated fields herd hillside livestock mammal meadows peaceful resting rural sky tranquil trees woodland antennae beauty butterfly Chalkhill Blue delicate feeding flower haustellum insect Lepidoptera Lycaenidae proboscis rest rhopalocera scabious veins wings bank chalk exercise farm hedge lane old peace route track transport travel verge walk tree view border clouds hill margin plants white yellow crop destination Downs fence footpath golden grain path trail wheat