_id	Worksheet	WS_Description	Field	Description	Type	Units
1	Bird observations	Distance sampling data of birds at three drylands locations	Index	Observation number	Numeric	number
2	Bird observations	Distance sampling data of birds at three drylands locations	Site	Be, Bl or Ca indicating Bendigo, Blackstone or Cambrian Hills study site	Text	""
3	Bird observations	Distance sampling data of birds at three drylands locations	Block	Block within study site, dominated by one of three vegetation types on a gradient of woodiness. g, i or s indicate grassland, intermediate (mixed grassland and shrubland), or shrubland	Text	""
4	Bird observations	Distance sampling data of birds at three drylands locations	Transect	Transect number within block. 1-5, with numbers of transects differing between blocks and between sites	Numeric	number
5	Bird observations	Distance sampling data of birds at three drylands locations	Trans length this sample	Transect length. Each transect was surveyed (sampled) multiple times on different days. Most transects were sampled 3 times, once on each of 3 different days. CaBiT1 (Cambrian Block i Transect 1) was sampled only twice	Numeric	metre
6	Bird observations	Distance sampling data of birds at three drylands locations	Total Trans length surveyed	The total length surveyed for each transect, equal to the product of its length and the number of times it was surveyed	Numeric	metre
7	Bird observations	Distance sampling data of birds at three drylands locations	Species code	Two- or three-letter code identifying bird species. See 'Bird species' table for list of codes	Text	""
8	Bird observations	Distance sampling data of birds at three drylands locations	Perp distance	Perpendicular distance from the transect line to the bird (or to a nearby object if the bird was flying). This distance was calculated from the distance and angle to the bird. Blank indicates not recorded	Numeric	metre
9	Bird observations	Distance sampling data of birds at three drylands locations	Number	Number of birds in each observation (flock size)	Numeric	number
10	Bird observations	Distance sampling data of birds at three drylands locations	Seen or Heard	S or H indicating whether the bird was seen or heard. Blank indicates not recorded	Text	""
11	Bird observations	Distance sampling data of birds at three drylands locations	Behaviour	F, P or S indicating whether the bird was flying, perching or singing. Blank indicates not recorded	Text	""
12	Bird observations	Distance sampling data of birds at three drylands locations	Observer	A, B, C or D indicating different observers	Text	""
13	Bird observations	Distance sampling data of birds at three drylands locations	StartTime	Time of day when transect was begun. Text field in format hh:mm	Datetime	""
14	Bird observations	Distance sampling data of birds at three drylands locations	EndTime	Time of day when transect was finished. Text field in format hh:mm	Datetime	""
15	Bird observations	Distance sampling data of birds at three drylands locations	Cloud	Cloud cover on a scale from 0-5. Blank indicates not recorded	Numeric	number
16	Bird observations	Distance sampling data of birds at three drylands locations	Wind	Average windspeed. Blank indicates not recorded	Numeric	kilometresperhour
17	Bird observations	Distance sampling data of birds at three drylands locations	Date	Date of sample. Text field in format yyyy-mm-dd	Datetime	""
18	Bird observations	Distance sampling data of birds at three drylands locations	Day of trip	Day number within sampling trip. 1-3 at Be and Be, and 1-4 at Ca	Numeric	number
19	Bird observations	Distance sampling data of birds at three drylands locations	Sample No.	Sample number for each transect. In most cases, each day that a transect was sampled resulted was a new sample. The exception was CaBiT2 (Cambrian Block i Transect 2), where because of bad weather sampling was halted partway along the transect on 2008-02-10, and was completed on the next day (2008-02-11) 	Numeric	number
20	Vegetation height	Average height of vegetation on each transect	SiteBlockTr	Site (Be,Bl,Ca), Block (Bg, Bi, Bs) within Site, and Transect (T1-T6) within Block. Site, Block and Transect are defined in the metadata for Bird observations	Text	""
21	Vegetation height	Average height of vegetation on each transect	AvHeight	Average height of vegetation on this transect. Vegetation measurement method is given in Wilson et al. 2014	Numeric	metre
22	Bird species	Bird species codes and common names	Species code	Two- or three-letter code identifying bird species, used in Bird observations data	Text	""
23	Bird species	Bird species codes and common names	Species name	Bird species common name	Text	""