HomeGlossary Birding slang Vagrant A bird found far outside its normal range. Vagrants often appear after storms or on remote islands and headlands. Birding slangRelated termsFull glossary Dip To miss a bird you went looking for. Twitch To travel to see a rare bird found by someone else; a twitcher is someone who does this. Patch A local area that a birder visits regularly. Life list A running list of every species a birder has seen. Pishing Making a "pssh-pssh" sound to draw small, curious birds out of cover. Big Day An attempt to record as many species as possible within one calendar day.