10.5061/DRYAD.WH70RXWP9
Gillies, Natasha
0000-0002-9950-609X
University of Oxford
Tyson, Chris
University of California, Davis
Wynn, Joe
University of Oxford
Syposz, Martyna
0000-0002-6148-039X
University of Oxford
Vansteenberghe, Cécile
University of Oxford
Guilford, Tim
University of Oxford
Exploring the mechanisms of coordinated chick provisioning in the Manx
shearwater (Puffinus puffinus)
Dryad
dataset
2021
FOS: Biological sciences
biparental care
behavioural ecology
breeding behaviour
coordinated care
Manx shearwater
Puffinus puffinus
Biotechnology and Biological Sciences Research Council
https://ror.org/00cwqg982
BB/M011224/1
2021-10-22T00:00:00Z
2021-10-22T00:00:00Z
en
https://doi.org/10.1111/jav.02881
https://doi.org/10.5281/zenodo.5591901
2042961 bytes
3
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Many species that provide care for their offspring in tandem with a
partner coordinate their activities to maximise the efficiency of their
investment. However, it is not well known exactly how this coordination is
achieved. Manx shearwaters Puffinus puffinus are Procellariiform seabirds
that exhibit a dual foraging strategy during chick provisioning in which
long foraging trips to maintain condition are alternated with short,
frequent trips to feed the offspring. This strategy is employed in a
coordinated manner between the parents, with one making short trips while
the other takes a single long trip. Previous work revealed that a
complementary switch in foraging trip type is initiated by the parents
following a synchronous visit to the nest. We used a combination of
observational data and an experimental manipulation to examine the
mechanisms that may underlie this behaviour. Specifically, we investigated
the evidence that physical reunion is necessary to induce a switch in trip
type, whether parents change their behaviour to maximise the probability
of partner encounter, and whether indirect cues gained from the chick
could inform a switch in behaviour. In our experimental approach, we
manipulated the information adults had available to them by
supplementarily feeding chicks to alter their begging behaviour. We found
no support for the role of physical reunion or indirect cues in the
coordination of care in this species. We discuss the possibility that the
patterns of alternated provisioning observed during chick rearing in Manx
shearwaters may emerge through entrainment during the well-coordinated
incubation period preceding chick provisioning.
Overview This folder contains codes and data to reproduce both the main
and supplementary results of the paper, published in the Journal of Avian
Biology (2021). DOI: 10.1111/jav.02881 There are 2 folders:
"Data" and "Scripts". As this is a large and
multi-year dataset that may be currently used by other members of the
project or collaborators, we would appreciate if you could contact Natasha
Gillies (gilliesne@gmail.com) if you would like to make use of the
dataset. This will reduce duplication of effort, and ensure that we can
give you any additional information that may be useful for analysis or
interpretation. Data These are the datasets used in the analysis. In
folder 'Shapefiles', 8 shapefiles are given for the islands
making up the possible rafting area of Manx shearwaters for which we had
GPS. These data are used to analyse the location of rafting events for
Supplementary Materials S3. - MASH_exptMetadata.xlsx: meta data relating
to the supplementary feeding experiment, where each row corresponds to one
fed chick. The columns are: - nest - factor encoding nest identity;
- time_in - time the chick was taken to lab for feeding; - mass_in -
mass of chick prior to feeding; - mass_out - mass of chick following
feeding; - time_out - time the chick was returned to the nest; -
date - date of feeding; - feed_size - calculated feed size (mass_out -
mass_in); - handling_time - calculated handling time (time_out -
time_in). - MASH_fullDataset.csv: data, with each row corresponding to an
RFID detection on a given night. This should be loaded into the
**preamble.r** code for processing and then analysed in
'data-analysis.r'. The columns are: - burID - factor
encoding nest identity; - date - date of recording; - ring -
factor encoding individual identity; - loopID - factor for processing
steps giving unique identity to a nest and night; - firstdet -
date-time of first detection of individual on a given night; - lastdet
- date-time of last detection of individual on a given night; -
visitDur - duration (minutes) of parent's visit to nest
(lastdet-firstdet); - prevVisit - time of departure for previous visit
to nest; - pev_days - time (days) since previous visit; -
chick_mass - mass (g) of chick taken during the day of the visit; -
Sex - factor representing parent sex: "F" (female) or
"M" (male); - incarcerated - factor for analysis of
incarceration experiment (Supplementary Materials) giving ring of
incarcerated parent; - group - factor representing which experiment
the nest was involved with: 'control' (no manipulation),
'feeding_suc' (successful feeding), 'feeding_fail'
(unsuccesful feeding), 'inc_suc' (successful incarceration),
'inc_fail' (unsuccessful incarceration); - burrow - factor
representing nest identity; - age - number of days since chick
hatched; - year - either 2018 or 2019; - colSync - factor
representing whether parents visited colony on same night
('YES') or not ('NO'); - burSync - factor
representing whether parents visited nest at same time ('YES')
or not ('NO'); - timebetween - time (minutes) between
arrival of parents if they visited the colony on the same night - negative
value indicates time spent at nest together; - ringYr - ID variable
indicating individual identity and year; - tripLength - duration of
foraging trip following departure from nest (hours); - trip_diff -
difference in trip duration between trip following nest departure and trip
preceding nest arrival (hours); - tripDays - tripLength converted to
nearest day; - days_diff - difference in trip duration converted to
nearest day; - abstrip - absolute value of hourly difference in trip
duration (i.e. trip_diff); - absdays - absolute value of daily
difference in trip duration (i.e. days_diff); - PREVtriptype - factor
representing trip category ('short' or 'long') of trip
preceding nest arrival; - NEXTtriptype - factor representing trip
category ('short' or 'long') of trip following nest
departure. - MASH_gpsData.csv: GPS data to use in Supplementary Materials
S3. The columns are: - date_time - date-time variable representing
time of GPS fix; - longitude - longitude; - latitude - latitude;
- dist_next - distance (km) to next GPS point; - calc_speed - speed
(km/h); - ring - factor encoding individual identity; - burrow -
factor encoding nest identity; - ID - factor encoding identity of
trip; - ringID - factor encoding combined ring and year identity;
- colony - factor encoding colony location, either 'cp'
(Copeland) or 'sk' (Skomer); - home_lat - latitude of
colony; - home_lon - longitude of colony; - dist_home - distance
to colony (km); - med_distance - medium distance from colony for trip;
- TA - turning angle; - raft - factor encoding individual rafting
events; - behaviour - factor encoding 'raft' versus
'fly' behaviour. Scripts Before running any of the data
analysis codes, the script preamble.r will process the dataset into
relevant objects and subsets for analysis. Here are the main scripts in R
to reproduce the results in the paper. - data-analysis.r Code to run the
models outlined in the paper, run a power analysis for our experiment, and
produce all figures displayed in the paper with the exception of the
schematic in Figure 2. - functions.r This script contains custom functions
used in the analysis or when producing figures - power-analysis.r This
script runs a power analysis for the experiment described in Supplementary
Materials S1 - Supplementary-Materials_data-analysis.r Code to run the
analyses and produce the results outlined in the Supplementary Materials