Date Range
1851–2013
With Field Notes
1013
93% of collection
✦ Featured Record · 216 notable records
This record is unusual because it describes a 'long slender egg' which is abnormal for American Robin eggs, which are typically round to oval in shape.
Collection Map · 610 of 1078 records georeferenced
Weekly collecting activity by incubation stage · n=892 records with day, month and incubation stage
freshslightcommencedone_thirdhalftwo_thirdsadvancednear_hatchinghatched
Nest Support (top 10) · n=220
apple tree72
pine tree26
willow23
willow tree20
small pine tree17
prune tree15
aspen tree14
cherry tree12
spruce tree11
small pine10
Nest Materials (top 10) · n=1531
mud660
grass292
grasses138
grass stems112
weed stems107
weeds57
stalks45
straw44
twigs39
moss37
Nest Height (metres) · n=851
0–0.5 m8
0.5–1 m49
1–1.5 m71
1.5–2 m152
2–2.5 m164
2.5–3 m38
3+ m369
Clutch Size · n=1078
0 eggs0
1 egg9
2 eggs28
3 eggs324
4 eggs656
5 eggs48
6 eggs4
7 eggs3
unknown6