Demographic consequences of individual variation in life history strategies of Heermann's gull

The dataset contains three demographic transition matrices stored as
comma-separated values, summarizing the demographic fecundities and
survivorship patterns of Heermann's gulls during normal years and
during warm-phase anomalies for females with a bold reproductive strategy
and females with a conservative strategy. It also contains the R-script
used for the demographic analyses and numerical simulations on these
matrices.