Individual encounter histories of bar-tailed godwits, great knots and red knots during 3 seasons

The datafile contains the encounter histories of 821 bar-tailed godwits (Limosa lapponica menzbieri), 1064 great knots (Calidris tenuirostris) and 709 red knots (Calidris canutus, primarily of the subspecies piersmai) that were individually marked and resighted at their primary non-breeding area Roe...

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Bibliographic Details
Main Authors: Piersma, Theunis, Lok, Tamar, Chen, Ying, Hassell, Chris J., Yang, Hong-Yan, Boyle, Adrian, Slaymaker, Matt, Chan, Ying-Chi, Melville, David S., Zhang, Zheng-Wang, Ma, Zhijun
Format: Dataset
Language:unknown
Published: 2015
Subjects:
coastal conservation
global change
intertidal land claims
migration
seasonal survival
demography
extinction
bar-tailed godwit
great knot
red knot
Roebuck
Calidris canutus
Red Knot
Siberia
Online Access:http://hdl.handle.net/10255/dryad.102735
https://doi.org/10.5061/dryad.kd00f/1
Description
Summary:The datafile contains the encounter histories of 821 bar-tailed godwits (Limosa lapponica menzbieri), 1064 great knots (Calidris tenuirostris) and 709 red knots (Calidris canutus, primarily of the subspecies piersmai) that were individually marked and resighted at their primary non-breeding area Roebuck Bay (North-West Australia) between December 2005 and June 2013. All birds were caught using cannon-netting, individually marked with 4 coloured bands and a flag and instantly released. Resightings occurred throughout the non-breeding season. To allow the estimation of survival during three seasons of the year, the captures and resightings were pooled into three periods: Jul-Oct, Nov-Feb, Mar-Jun. The median dates of resightings during these three periods, rounded to the 1st of the month, were 1 Oct, 1 Jan and 1 Apr, hence the intervals over which survival rates were estimated were approximately 3, 3 and 6 months. The encounter histories start with the period in which the individual was captured and individually marked. Each row in the datafile represents one individual, and the three columns represent the encounter history (ch), where individuals are either seen (1) or not seen (0) during a particular period, the age of the bird when it was first captured and individually marked (age_at_ringing), distinguishing first-year (1) and older (2) birds, and the species (species), where BTG=bar-tailed godwit, GK=great knot and RK=red knot.

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