Quantitative Definition : BCR density >= 50% of maximum density Equivalent Qualitative Definition : Breeds in high average abundance, similar to the region(s) in which the species occurs in maximum density
more
RD-b5
Facts from the Community
From the Conservation Action base
From the Land Cover base
Classification system:
Numeric identifier:
- 5
From the Bird Info base
Numeric identifier:
- 5
Classification system:
Similar topics in Freebase
-
Continental concern species
Continental Concern species. Species must meet all of the following criteria in order to rank as Continental Concern within a given BCR: a. Listed on Watch List in PIF North American Landbird Plan (Rich et al. 2004)b. Occur regularly in significant numbers in the BCR, i.e. RD ... -
RD-b4
Quantitative Definition : BCR density 25-50% of maximum density Equivalent Qualitative Definition : Breeds in moderately high average abundance relative to the region(s) in which the species occurs in maximum density -
RD-bP
Peripheral: has bred only irregularly, or, strong evidence of regular breeding is lacking -
PT-c3
(Highly variable OR Unknown) over 30 yrs OR (N/A) equivalent % annual change OR "Uncertain population trend" -
TN-r2
Expected future conditions for non-breeding populations are expected to remain stable; no known threats. -
BD-g2
Breeding distribution ≥ 2,000,000 and < 4,000,000 km2, or > 5,000 to ≤ 8,000 km of coast -
RD-b2
Quantitative Definition : BCR density 1-10% of maximum density Equivalent Qualitative Definition : Breeds in low average abundance relative to the region(s) in which the species occurs in maximum density -
PS-g5
World breeding population < 50,000 -
RD-b3
Quantitative Definition : BCR density 10-25% of maximum density Equivalent Qualitative Definition : Breeds in moderate average abundance relative to the region(s) in which the species occurs in maximum density -
RD-b1
Quantitative Definition: BCR density < 1% of the maximum density Equivalent Qualitative Definition: Breeds regularly but in very small numbers or in only a very small part of the region in question
