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Massachusetts Important Bird Areas
IBA Criteria Category 1
Sites regularly holding significant numbers of an endangered, threatened,
vulnerable, or declining species.
Sites that regularly support significant numbers of one or more
of the following  breeding
or nonbreeding species listed as endangered, threatened, or of special
concern in the state of Massachusetts. These include breeding, wintering,
or migratory areas. The site should be one of regular and/or recent
occurrence (in the past ten years). Thresholds will vary and may
include sites with 1% of the state population (if known) in a season,
or represent one of the three to five sites in the state with the
highest regularly occurring numbers. The site holds a significant
number of individuals classified as:
- federally endangered or threatened
(1% or more of state population)
Endangered - Roseate Tern;
Threatened - Bald Eagle & Piping Plover;
Delisted - Peregrine Falcon
- state-endangered, threatened, or of special concern
(1% or more of state population)
| Endangered |
Threatened |
Special
Concern |
|
Pied-billed Grebe |
Northern Harrier |
Common Loon |
| Leach’s
Storm-Petrel |
King
Rail |
Sharp-shinned
Hawk |
| American
Bittern |
Northern
Parula |
Common
Moorhen |
| Least
Bittern |
Vesper
Sparrow |
Common
Tern |
| Upland
Sandpiper |
Grasshopper
Sparrow |
Arctic
Tern |
| Short-eared
Owl |
|
Least
Tern |
| Loggerhead
Shrike |
|
Barn
Owl |
| Sedge
Wren |
|
Long-eared
Owl |
| Golden-winged
Warbler |
|
Blackpoll
Warbler |
| Henslow’s
Sparrow |
|
Mourning
Warbler |
For
more information on state and national population trends or these species, go
to the Breeding Bird Survey Data.
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View Criteria Category (1), (2), (3),
(4),
(5)
| Criteria
Intro |
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