These datasets contain data from: Krist, M. & Grim, T. (2007) Are blue eggs a sexually selected signal of female collared flycatchers? A cross-fostering experiment. Behavioral Ecology & Sociobiology, 61, 863-876. Data collectors: Milos Krist, Tomas Grim (intensity of nest defence): e-mails: milos.krist@upol.cz, tomas.grim@upol.cz Datasets are saved as CSV file separated by semicolons. There are no special symbols for missing data. Missing data are simply empty cells in the spreadsheed. The dataset called "dataset" has following columns: Note: For each particular row of the table the following holds: females whose traits are given in columns 19, 23, 25, 32-35, 44-46 laid eggs whose values are given in columns 4-9 but cared of chicks (whose values are given in columns 37-43) that hatched from cross-fostered eggs (whose values are given in columns 10-15). Values of genetic parents of these chicks are given in columns 47-48. 1) Plot - name of the study plot. 2) Nest - nest identity on the plot. 3) Laying date - laying date in this nest (1st May=1). 4) OR clutch - clutch size laid originally in this nest. 5) OR egg volume - mean volume of eggs laid originally in this nest (in mm3). 6) OR total reflectance - mean brightness of eggs originally laid in this nest. 7) OR BGC - mean blue-green chroma of eggs originally laid in this nest; computed in the range 301-700nm. 8) OR BGC visible - mean blue-green chroma of eggs originally laid in this nest; computed in the range 401-700nm. 9) OR hue - mean hue of eggs originally laid in this nest. 10) CF clutch - clutch size cross-fostered to this nest. 11) CF egg volume - mean volume of eggs cross-fostered to this nest (in mm3). 12) CF total reflectance - mean brightness of eggs cross-fostered to this nest. 13) CF BGC - mean blue-green chroma of eggs cross-fostered to this nest; computed in the range 301-700nm. 14) CF BGC visible - mean blue-green chroma of eggs cross-fostered to this nest; computed in the range 401-700nm. 15) CF hue - mean hue of eggs cross-fostered to this nest. 16) Time of record6 - daytime of video-record of parental feeding frequency to the brood at the age of 6 days. 17) Temperature6 - ambient temperature at the time of video-record at the age of 6 days (degrees of Celsia). 18) Male frequency6 - feeding frequency of the male parent at brood age of 6 days (visits per hour). 19) Female frequency6 - feeding frequency of the female parent at brood age of 6 days (visits per hour). 20) Time of record12 - daytime of video-record of parental feeding frequency to the brood at the age of 12 days. 21) Temperature12 - ambient temperature at the time of video-record at the age of 12 days (degrees of Celsia). 22) Male frequency12 - feeding frequency of the male parent at brood age of 12 days (visits per hour). 23) Female frequency12 - feeding frequency of the female parent at brood age of 12 days (visits per hour). 24) Number of parents - binary variable indicating whether single (=1) or both (=2) parents cared of the brood. 25) PC1 female frequency - first principal component generated from female feeding frequencies at the two ages of nestling. 26) ND age - nestling age on the day when nest-defence trial was conducted (in days). 27) ND brood size - brood size on the day when nest-defence trial was conducted. 28) Male IND - ordinal measure of male intensity of nest defence. 29) Male latency - latency to the first attack by the male (in seconds). 30) Male number - number of male attacks against the dummy during the 5-min trial. 31) Male pc1 - first principal component from the latency to the first attack and number of attacks made by the male. 32) Female IND - ordinal measure of female intensity of nest defence. 33) Female latency - latency to the first attack by the female (in seconds). 34) Female number - number of female attacks against the dummy during the 5-min trial. 35) Female pc1 - first principal component from the latency to the first attack and number of attacks made by the female. 36) Mites? - whether nest was infested by the mites (=1) or not (=0). 37) Brood size0 - number of hatched young. 38) Brood size6 - brood size at nestling age of 6 days. 39) Brood size13 - brood size at nestling age of 13 days. 40) Number fledged - number of fledged chicks. 41) Nestling weight - mean weight of 13-day old nestlings that subsequently fledged (in grams). 42) Nestling tarsus - mean tarsus length of 13-day old nestlings that subsequently fledged (in mm). 43) Nestling immunity - mean PHA immunity of 13-day old nestlings that subsequently fledged (in mm). 44) Female age - in years. 45) Female tarsus length - in mm. 46) Female condition - residuals from the regression of female weight on brood age when female was captured and its tarsus length (in grams). 47) Midtarsus of genetic parents - mean length of tarsus of genetic parents of chicks whose traits are given in the same row of the table (in mm). 48) Midresweight of genetic parents - mean residual weight (controlled for brood age when parent was captured) of genetic parents of chicks whose traits are given in the same row of the table (in grams). The dataset called "individual_eggs" contains color characterictics of individual eggs with respect to laying order and has following columns: 1) Plot - name of the study plot. 2) Nest - nest identity on the plot. 3) 1total reflectance - reflectance of the first egg summed over the range 301-700nm. 4) 1UV reflectance - reflectance of the first egg summed over the range 301-400nm. 5) 1blue reflectance - reflectance of the first egg summed over the range 401-500nm. 6) 1green reflectance - reflectance of the first egg summed over the range 501-600nm. 7) 1red reflectance - reflectance of the first egg summed over the range 601-700nm. 8) 1BGC - blue-green chroma of the first egg. 9) 1hue - hue of the first egg. 10-16) the same information for second eggs. 17-23) the same information for third eggs. 24-30) the same information for fourth eggs. 31-37) the same information for fifth eggs. 38-44) the same information for sixth eggs. 45-51) the same information for seventh eggs. 52-58) the same information for eighth eggs.