Species: Zonotrichia atricapilla
Taxonomic class: Aves
Population type: free-ranging
Geographical location: California, USA
Data collection technique: survey scan
Interaction type: group membership
Definition of interaction: Flocks were defined as a group of individuals found within a single 5 m radius. For each season, Simple Ratio association index was calculated for each pair of individuals, which ranged from 0 for pairs never seen in the same flock and 1 for pairs always seen in the same flock.
Edge weight type: frequency
Total duration of data collection: 4 months
Time resolution of data collection (within a day):
Time span of data collection (within a day): focal follow/ad libitum
Note: Networks represent social data collected during two non-breeding seasons: October 2010�February 2011 (Season 2) and October2011�April 2012 (Season 3).
list of igraph objects
Shizuka, Daizaburo, et al. "Across‐year social stability shapes network structure in wintering migrant sparrows." Ecology letters 17.8 (2014): 998-1007.