BirdAnalyst
BBS Route · Maryland · BCR 30

Forest Grove Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 94 species recorded across 11 survey years, still active.

94Species 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 →
11Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2011–2023Span
1Observers

Bird Species Found on Maryland Forest Grove

Top 40 of 94 species by most recent count. Each links to its species trend.

Species recorded on the Forest Grove 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
European StarlingSturnidae1832023+103%2013
Northern CardinalCardinalidae802023+12%2013
American RobinTurdidae762023-15%2013
Carolina WrenTroglodytidae632023+56%2013
Common GrackleIcteridae582023+8%2013
Chipping SparrowPasserellidae582023-6%2013
Tufted TitmouseParidae542023-42%2013
Canada GooseAnatidae512023+123%2013
House SparrowPasseridae442023-19%2013
Red-eyed VireoVireonidae392023-34%2013
Northern MockingbirdMimidae372023+3%2013
Red-winged BlackbirdIcteridae362023+13%2013
Gray CatbirdMimidae352023+0%2013
Mourning DoveColumbidae332023+6%2013
Indigo BuntingCardinalidae332023-29%2013
Purple MartinHirundinidae302023+5%2013
Carolina ChickadeeParidae272023-34%2013
Blue-gray GnatcatcherPolioptilidae272023+13%2013
Brown-headed CowbirdIcteridae242023+14%2013
American CrowCorvidae222023-71%2013
Eastern BluebirdTurdidae222023+29%2013
Blue GrosbeakCardinalidae202023-23%2013
Rock PigeonColumbidae202023+139%2017
Chimney SwiftApodidae192023-30%2013
Pine WarblerParulidae192023+113%2013
Black VultureCathartidae172023+121%2013
Red-bellied WoodpeckerPicidae162023+10%2013
American GoldfinchFringillidae162023-14%2013
Song SparrowPasserellidae162023-52%2013
Eastern TowheePasserellidae162023-46%2013
House FinchFringillidae152023-31%2013
Acadian FlycatcherTyrannidae142023-31%2013
Turkey VultureCathartidae132023+2%2013
Eastern Wood-PeweeTyrannidae132023-21%2013
White-breasted NuthatchSittidae132023+4%2013
Downy WoodpeckerPicidae122023+11%2013
Fish CrowCorvidae122023+156%2014
Blue JayCorvidae92023-37%2013
Barn SwallowHirundinidae92023-51%2013
Wood ThrushTurdidae92023-39%2013

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.