Analysis of animal movement using opportunistic individual identifications: application to sperm whales

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Disentangling social networks from spatiotemporal dynamics: the temporal structure of a dolphin society (2012, methodology): “To assess the effect of demographic processes on association patterns, we used lagged identification rates (LIR; Whitehead 2001) to infer information about individual additions to or deletions from the population.”
SOCPROG programs: analysing animal social structures (2009, unknown): “SOCPROG also carries out some mark-recapture population analyses (and prepares data for the program MARK; White and Burnham 1999) as well as analyses of movements of identified individuals either in continuous space or between discrete areas (described in Whitehead 2001 ).”
Spinner dolphins in a remote Hawaiian atoll: social grouping and population structure (2005, background): “If there is emigration or mortality, then lagged identification rates typically fall with time lag ( Whitehead, 1999a, 2001 ).”
Characteristics of a manta ray Manta alfredi population off Maui, Hawaii, and implications for management (2011, background): “…that an individual identified at any time ‘0’ is re-identified at t units later: R(t) = P(t)/N (1) where R(t) is the LIR for time lag t, P(t) is the probability that an animal is in the study area t time units after it was there and N is the population size in the study area (Whitehead 2001).”