animal arched beak behaviour bird curved drink drinking natural nature neck reflection river self reflection sip swan thirst thirsty water white Adela reaumurella congregate Corylus ecology England fairy fly Great Britain hazel insect Lepidoptera moth spring Sussex swarm tree annoyance annoying appropriate behavior appropriate behaviour direction no touting not allowed not permitted penalties permission denied prohibited prohibition sign touting touts warning access-denied access-limited advice advising alert appropriate-behavior appropriate-behaviour authorised-entry-only authorized-entry-only behave behavior black care caution communicate communication concern construction construction-site danger dangerous entry-denied entry-prohibited information informing limited-access no-access no-entry not-allowed not-permitted permission-denied red restricted restriction restrictions risk risks risky safety unauthorised unauthorized warning-sign be-careful blue careful communicating conditions directions Look looking lookout signs bee wolf burrow dig digger english Frensham Little Pond Hymenoptera invertebrate Philanthus triangulum sand Surrey wasp emergencies emergency protect protection warning sign yellow dangers law legalities rules no entry rust rusty unwanted weathered