The graphic displays four images of Puffins showcasing the different recording units for them on SMP surveys. These are IND (individuals on land at the colony), AOB (apparently occupied burrows), SEA (individuals on the sea adjacent to the colony), and AIR (individuals flying over the colony).
Puffin colony count surveys are recommended from April 30th. Multiple survey methods and recording units can be used to monitor them. Take a look at the graphic below to visualise the different units! ⬇️ #seabirds @btobirds.bsky.social @jncc.bsky.social @rspb.bsky.social