BirdAnalyst
BBS Route · Connecticut · BCR 30

Granby Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 109 species recorded across 25 survey years, still active.

109Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
25Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1988–2025Span
4Observers

Bird Species Found on Connecticut Granby

Top 40 of 109 species by most recent count. Each links to its species trend.

Species recorded on the Granby route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Red-eyed VireoVireonidae352025+44%1990
American RobinTurdidae342025+2%1990
European StarlingSturnidae242025-31%1990
Chipping SparrowPasserellidae222025+47%1990
Gray CatbirdMimidae192025-15%1990
Mourning DoveColumbidae182025+4%1990
Northern CardinalCardinalidae172025+72%1990
Song SparrowPasserellidae162025+5%1990
OvenbirdParulidae162025+2%1990
American RedstartParulidae132025-11%1990
Wood ThrushTurdidae132025-18%1990
Eastern PhoebeTyrannidae122025+40%1990
Tufted TitmouseParidae122025+77%1990
Bank SwallowHirundinidae122014+19%1991
Chimney SwiftApodidae112025-4%1990
House FinchFringillidae112025-77%1990
Common YellowthroatParulidae112025-35%1990
Eastern Wood-PeweeTyrannidae102025+17%1990
American CrowCorvidae102025-49%1990
Barn SwallowHirundinidae102025+13%1990
Cedar WaxwingBombycillidae102025+13%1990
Common GrackleIcteridae92025-28%1990
American GoldfinchFringillidae92025+135%1990
Yellow WarblerParulidae92025-25%1990
Warbling VireoVireonidae92025+188%1991
Northern House WrenTroglodytidae82025+46%1990
VeeryTurdidae82025-18%1990
Brown-headed CowbirdIcteridae72025-7%1990
Red-winged BlackbirdIcteridae72025-66%1990
Baltimore OrioleIcteridae62025-64%1990
Black-and-white WarblerParulidae62025+46%1990
House SparrowPasseridae62025-39%1990
Black-capped ChickadeeParidae62025-10%1990
Red-bellied WoodpeckerPicidae62025+667%1995
Great Crested FlycatcherTyrannidae52025-14%1990
Indigo BuntingCardinalidae52025+23%1990
Scarlet TanagerCardinalidae52025+23%1990
Yellow-throated VireoVireonidae52025+100%1990
Downy WoodpeckerPicidae42025-46%1990
Willow FlycatcherTyrannidae42024-25%1990

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.