The breeding codes listed below are to be used for this part of the survey. The aim is not only to match the code to the observation, but to further the value of the record by aiming for a 'better' observation. For example, if a bird is observed visiting a probable nest site (N), why not observe a while longer to see if the bird can be observed carrying a faecal sac away (FS). The further down the list we can go, the better the value of the breeding record.

O Bird Observed (seen or heard); no more knowledge of the species' status or of habitat suitable for breeding

H Species present in suitable nesting Habitat; no other indication of breeding

S Singing male heard, or breeding calls heard

P Pair observed in suitable nesting habitat

D Display or courtship

N Bird visiting a probable Nest site

B Birds seen Building a nest, carrying nesting material, or excavating nest cavity

A Agitated behaviour or anxiety calls from adults suggesting a nest or young nearby

I Active brood patch on trapped bird, probably Incubating

DD Distraction Display or injury-feigning from adults

UN Recently Used Nest (used this season), or egg-shells

ON Occupied Nest in use (e.g. high nest or nest-hole whose contents cannot be deduced)

FY Adults carrying Food for Young

RF Recently Fledged young, still dependent on parents

FS Adults carrying Faecal Sac away from nest site

NE Nest with Eggs, or adult sitting on nest

NY Nest with Young, or downy young of nidifugous species