Population status

Scarlet Tanager
(Piranga olivacea)

The most reliable survey for the Scarlet Tanager in Canada is the Breeding Bird Survey (BBS), which covers about 80% of the species' breeding population in Canada. BBS results indicate that though the national population has experienced a small decrease since 1970, it is within the levels considered to be little overall change. At the regional level, results vary somewhat among the Bird Conservations Regions (BCRs) for which there are reasonably reliable BBS results (displayed below); from a decrease of 41% in the Atlantic Forest BCR, to relatively stable populations in the Lower Great Lakes / St. Lawrence Plain and Boreal Hardwood Transition BCRs. The BBS results for North America show little overall change in the continental population over a similar time period. The Scarlet Tanager is currently at an acceptable level relative to its national population goal (see BBS Canada graph below).

 

Population goal and acceptable levels of variation

Species/groupGoalLower levelUpper level
Scarlet TanagerMean abundance (first 5 years of survey)Goal minus 25% Not applicable

Breeding Bird Survey (BBS) - Canadian analysis

Additional information on: Breeding Bird Survey (BBS) - Canadian analysis

Table 1: Population trends by geographic area
Geographic areaTime Period Table 1 - footnote 1 Annual trend Table 1 - footnote 2 Limits
LowerUpper
Canada Select to view graph of the geographic area: Canada 1970-2016; Breeding Bird Survey (BBS) - Canadian analysis1970-2016-0.3-10.4
Canada Select to view graph of the geographic area: Canada 2006-2016; Breeding Bird Survey (BBS) - Canadian analysis2006-20160.3-1.22.6
Boreal Hardwood Transition Select to view graph of the geographic area: Boreal Hardwood Transition 1970-2016; Breeding Bird Survey (BBS) - Canadian analysis1970-2016-0.4-1.20.6
Lower Great Lakes / St. Lawrence Plain Select to view graph of the geographic area: Lower Great Lakes / St. Lawrence Plain 1970-2016; Breeding Bird Survey (BBS) - Canadian analysis1970-20160.3-0.71.1
Atlantic Northern Forest Select to view graph of the geographic area: Atlantic Northern Forest 1970-2016; Breeding Bird Survey (BBS) - Canadian analysis1970-2016-1.1-2.60.5
North America Select to view graph of the geographic area: North America 1970-2016; Breeding Bird Survey (BBS) - Canadian analysis1970-2016-0.1-0.30.1
 

References