2
Species heard or observed within safe dates, and in suitable breeding habitat
3
Territorial behavior, including counter singing males, territorial singing (repeatedly singing from same locations within an area), drumming in woodpeckers, or aggressive interactions between same-sex individuals of same species
4
Pair (male and female) within safe dates, and in suitable breeding habitat
5
Pair (male and female) present at the same location 7 or more days apart
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 observed at nest site (Note: for nest building by wrens, woodpeckers, kingfisher...)
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
17
Eggshells found below nest
13
Recently fledged young that are incapable of sustained flight
14
Occupied nest, but contents not observed; adults entering and remaining for a period of time, then leaving or exchanging duties
18
Nest with adult incubating
15
Adult carrying a fecal sac
16
Adult carrying food for young
19
Nest with nestlings or eggs
20
Nest with young seen or heard.
Only if not any case above is applicable
99
No species despite active search
Sightings
Stats
or 