1
Species observed in breeding season
2
Species heard or observed within safe dates, and in suitable breeding habitat
3
Singing, drumming or displaying individual present in breeding season in possible nesting habitat
4
Pair observed in suitable nesting habitat in breeding season
5
Territorial behaviour (song, fights with neighbour etc.) on at least two different days at same place indicating a permanently occupied territory
6
Courtship behavior (aerial displays, courtship feeding) or copulation
7
Visiting probable nest site
8
Agitated behavior and/or anxiety calls from an adult, suggesting presence of nearby nest or young
9
Brood patch (Note: code only applies to birds observed in hand and is reserved for experienced birder only)
10
Nest-building or excavating of nest-hole observed
11
Distraction display (especially injury feigning, such as broken wing display) or attacking/dive-bombing humans in defense of unobserved nest or young
12
Used nest (occupied within period of survey); includes inactive nests
13
Recently fledged young that are incapable of sustained flight
14
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
15
Adult carrying a fecal sac
16
Adult carrying food for young
17
Eggshells found below nest
18
Nest with adult incubating
19
Nest with nestlings or eggs
Only if not any case above is applicable
99
Not observed despite active search