Brown Creeper
 
Vermont Breeding Bird Atlas


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Glossary

First and Second Priority Blocks

Priority Block Count: "First" = Priority 1 blocks. These were surveyed during both the first and second atlases, and only these data are used to compare results from the two atlases, e.g., in the "Change in Distribution" map. "First & Second" = Priority 1 and 2 blocks combined. Priority 2 blocks were randomly selected blocks that received full coverage during the second Atlas, in addition to Priority 1 blocks.

Explanation of Conservation Rankings

1 - Very rare (Critically imperiled): At very high risk of extinction or extirpation due to extreme rarity (often 5 or fewer populations or occurrences), very steep declines, or other factors

2 - Rare (Imperiled): At high risk of extinction or extirpation due to very restricted range, very few populations (often 20 or fewer), steep declines, or other factors

3 - Uncommon (Vulnerable): At moderate risk of extinction or extirpation due to restricted range, relatively few populations or occurrences (often 80 or fewer), recent and widespread declines, or other factors

4 - Common to uncommon (Apparently secure): locally common or widely scattered to uncommon, but not rare; some cause for long-term concern due to declines or other factors; or stable over many decades and not threatened but of restricted distribution or other factors

5 - Common (Secure): widespread and abundant

H - Possibly extinct/extirpated: Missing; known from only historical occurrences but still some hope of rediscovery
X - Presumed extinct/extirpated: Not located despite intensive searches and virtually no likelihood of rediscovery
U = Unrankable: Currently unrankable due to lack of information or substantially conflicting information about status or trends
NR = Not ranked: Not yet assessed
NA = Not applicable. Element is not a suitable target for conservation for one of the following reasons: Hybrid, Exotic Origin, Accidental/Nonregular, Not Confidently Present, No Definable Occurrences

The following may follow a numeric rank to provide further information:

? - indicates uncertainty about the rank, uncertainty may also be expressed in the form of a range rank (e.g. S1S3)
B - Indicates the preceding rank is for breeding populations
N - Indicates the preceding rank is for nonbreeding populations
M - Indicates the preceding rank is for migratory populations
T - For global ranks only, indicates an infraspecies.
Q - For global ranks only, indicates questionable taxonomy.

State Status - Legal protection under Vermont Endangered Species Law (10 V.S.A. Chap. 123)
E = Endangered: in immediate danger of becoming extirpated in the state
T = Threatened: with high possibility of becoming endangered in the near future

SGCN - Species of Greatest Conservation Need as identified in the Vermont Wildlife Action Plan; does not denote legal protection.

List of commonly used abbreviations:

AOU - American Ornithologists' Union
BBS - U.S. Fish and Wildlife Service Breeding Bird Survey
BCR - Bird Conservation Region (Vermont includes regions 13 and 14)
CBC - National Audubon Society Christmas Bird Count
FBMP - Forest Birds Monitoring Project
MBW - Mountain Bird Watch
NWR - National Wildlife Refuge
NYSDEC - New York State Department of Environmental Conservation
PIF - Partners in Flight
RVB - Records of Vermont Birds
TNC - The Nature Conservancy
USFWS - United States Fish and Wildlife Service
VTFWD - Vermont Fish and Wildlife Department
VBRC - Vermont Bird Records Committee
NNHP - Vermont Nongame and Natural Heritage Program
WMA - Wildlife Management Area
VTWAP - Vermont Wildlife Action Plan
VLRP - Vermont Loon Recovery Project

What is a State Recovery Plan?

This State Recovery Plan identifies effective actions that will contribute to the conservation and recovery of the state-threatened species. It outlines population assessment and monitoring needs for tracking changes in distribution and abundance of the population as well as for determining success or failure of the recovery effort.

What is a "high or low mast" year?

IThe term “mast” refers to the fruit of certain forest trees that produce seeds of sufficient bulk and nutritional value that they can serve as a food for larger animals. Production of mast varies from year to year; high mast being when large numbers of seeds are produced, and low mast when fewer seeds are produced.

What is "early/mid successional"?

The progressive replacement of one dominant type of species or community by another in an ecosystem until a stable climax community is established.

What is "riparian"?

Relating to, living, or located on the bank of a natural watercourse (as a river) or sometimes of a lake or a tidewater.

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