Each block consists of 1/6 of a USGS 7.5 minute topographic quad. Of a total of 120 quads for the state, 117 contained blocks with data. All 596 established blocks were surveyed.
The state was divided into the following eight regions, each of which was assigned a coordinator: Northwest, North Central, Northeast, West Central, Lower Connecticut River Area, Southeast, Southwest, and New Haven area.
Code description
(see handbook for full description & use suggestions)
OB Category - Observed: not breeding evidence
X
Species (male or female) observed in its breeding season with no evidence of breeding.
PO Category - possible breeding evidence
O
Species (male or female) observed in suitable nesting habitat during its breeding season.
S
Singing male present in suitable nesting habitat during its breeding season.
PR Category - probable breeding evidence
P
Pair observed in suitable nesting habitat during its breeding season.
T
Permanent territory presumed through registration of territorial behavior (song, etc.) on at least 2 days, 7 days or more appart, at the same place.
C
Courtship behavior or copulation.
N
Visiting probable nest site.
A
Agitated behavior or anxiety calls from adult.
B
Nest building by wrens or excavation of holes by woodpeckers.
CO Category - confirmed evidence of breeding
NB
Nest building by any species except wrens and woodpeckers.
PE
Physiological evidence of breeding, e.g. highly vascularized, edematous brood patch or egg in oviduct based on bird in hand. (For banders.)
DD
Distraction display or injury feigning.
UN
Used nest found. Must be carefully identified if it is to be accepted.
FL
Recently fledged young or downy young of Galliformes, shorebirds or waterfowl. Fledged young should be incapable of sustained flight.
ON
Adults entering or leaving nest site in circumstances indicating occupied nest (including high nests or nest holes, the contents of which cannot be seen); or adult incubating.
AY
Attending young: adult carrying fecal sac or food for young, or feeding recently fledged young.
