O
Species observed in breeding season in possible nesting habitat
S
Singing, drumming or displaying individual present in breeding season in possible nesting habitat
PR
Pair observed in suitable nesting habitat in breeding season
TE
Territorial behaviour (song, fights with neighbour etc.) on at least two different days a week or more apart at same place indicating a permanently occupied territory
KT
Courtship behavior (aerial displays, courtship feeding) or copulation
OM
Visiting probable nest site
NP
Agitated behavior and/or anxiety calls from an adult, suggesting presence of nearby nest or young
PL
Brood patch (Note: code only applies to birds observed in hand and is reserved for experienced birder only)
BU
Nest-building or excavating of nest-hole observed
UDA
Distraction display (especially injury feigning, such as broken wing display) or attacking/dive-bombing humans in defense of unobserved nest or young
GNS
Used nest (occupied within period of survey); includes inactive nests
MŁO
Recently fledged young that are incapable of sustained flight
ZAJ
Adults entering or leaving nest-site in circumstances indicating occupied nest (including high nests or nest-holes, the contents of which can not be seen) or adult seen incubating
POD
Adult carrying food for young
WYS
Nest with adult incubating
PIS
Nest with young seen or heard
Only if not any case above is applicable
NOBS
Not observed despite active search
Sightings
Stats