Birds Base Data — Soaring Wild

Species with a global range size <50,000 km² receive a value of 1.

If a species is found in two or more realms, realm is a combination (e.g. LN = Neotropical + Nearctic).

Latitudinal range based on tropics and polar circles.

Habitats are numbered in order of preference.

F: Forest, secondary forest, swamp forest, tree-fall gaps, taiga, igapo, varzea
BM: Bamboo
WD: Acacia woodland, tropical deciduous/dry forest, savanna woodland, palm groves, miombo woodland, thorn forest, Polylepis woodland, pine-oak woodland
SH: Shrubland, scrub, secondary growth (with few trees), cerrado, campo, karoo, thickets, roadside growth, heaths, copses, hedgerow, vine tangle, caatinga, chaco
SV: Savanna, arid plains, wooded grassland, pampas, campos
G: Grasslands, high altitude flats, puna, altiplano, tundra, tussock, pastures, steppe, paramo, moorland, plateaus, open vegetation
PL: Plains, dry & open areas, semi-desert, steppe, tundra, arid and semi-arid grassland
R: Rocky areas, cliffs, outcrop, inselberg, koppi, escarpment
D: Desert, sand dune (not coastal)
A: Artificial, agricultural, farms, plantations, suburban, quarry, mine, excavation, dams and man-made lakes
C: Sea coast, mangrove, estuary, bays, shores, fjords (only sea coast), coastal dune
RV: Riparian, riverine, gallery forest, stream, running water, wooded ravines
W: Wetlands, lakes, salt lakes, marsh, reedbed
SE: Open sea, pelagic
O: Other
Primary Habitat: The main habitat type utilized by a species
HB: Habitat breadth — number of major habitats used

Infrequent feeding (described as "rarely" or a few times) = T (trace). "Occasionally" consumed = weight of 1. "Also" consumed = weight of 2.

Primary Diet: If any diet column ≥ 6, that column is the primary diet. Otherwise: Carnivore (primarily animal matter), Herbivore (primarily plant matter), or Omnivore (combination).
IN-Wt: Invertebrates: arthropods, insects, aquatic invertebrates, molluscs, krill, shrimp, cephalopods, squid, crustaceans, polychaetes, gastropods, orthoptera
FR-Wt: Fruit, drupes
NE-Wt: Nectar
SE-Wt: Seed, maize, nuts, spores, grain
VE-Wt: Land vertebrates (non-sea): reptiles, snakes, amphibians, salamanders, mammals, birds
FI-Wt: Fish
SC-Wt: Scavenger: carcasses, garbage, offal, refuse, trawlers
PL-Wt: Non-reproductive plant material: vegetation, algae, grass, roots, tubers, flowers
MS-Wt: Miscellaneous (e.g. eggs = ovivores; beeswax)
SUM-Wt: Sum of weighted diets — equals 10, or 0 if diet is unknown
Desc: Description of miscellaneous food items
DB: Diet breadth — number of major food types consumed
Diet_Lit: 0 = interpolated diet; 1 = diet from published source
ESI: Ecological Specialization Index: log₁₀(100 ÷ [dietary breadth × habitat breadth]); maximum 2 for the most specialized species

0 = behavior not described for the species.

The substrate refers to what the nest is placed on or in.

Brd1, Brd2: Minimum and maximum number of broods (does not include failed nesting attempts)
Clutch_Min, Max: Lower and upper number of eggs laid (excluding rare clutch sizes)
Incu_Sex: Sex incubating: F = female, M = male, B = both
Incu1, Incu2: Lower and upper limits of incubation (days)
Fldg1, Fldg2: Lower and upper limits of fledging (days)

0 = no known parasitism. Note: intra-specific parasitism receives a 1 in both columns.

BrS1, BrS2: Lower and upper limits of breeding success (% nests fledging young)
Prod1, Prod2: Yearly productivity per pair (number of young raised to fledging)

1 = species undertakes that type of movement.

Mig: Migration: yearly, regular, seasonal, and/or long-distance movement. 2 = partial migrant.
Alt: Altitudinal/elevational migration: regular movements between high and low altitudes seasonally or post-breeding.
Irreg: Nomadic, erratic, irruptive, or irregular movements due to weather, food availability, etc. Also unclear or poorly-known seasonal movements.
Disp: Long-distance dispersal: usually once in a lifetime, post-fledging. Requires clear evidence of longer-distance movement.
Sed: Sedentary: largely does not migrate; typically a resident species with at most local/seasonal movements.