Entity_Type:
Entity_Type_Label: spectacledEider_nestVisits_YKD_flint_1991-2022.csv
Entity_Type_Definition:
Table with nest visit records of Spectacled Eiders near the Kashunuk River and on Kigigak Island on the Yukon-Kuskokwim Delta, Alaska. Nests were visited during the months of June and July 1991-2004. Presented in a Comma Separated Value (CSV) formatted table.
Entity_Type_Definition_Source: Author defined
Attribute:
Attribute_Label: Study_Area
Attribute_Definition: Site name for study area.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kashunuk
Enumerated_Domain_Value_Definition:
Study area along the Kashunuk River (approximately 61.32 N, 165.60 W)
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kigigak
Enumerated_Domain_Value_Definition:
Study area along the Kigigak River (approximately 60.85 N, 164.95 W)
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: YR_Nest
Attribute_Definition:
Unique identifier for each nest in this dataset. A concatenation of the study year and nest number. Corresponds to year and nest numbers in other tables included with this data package.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier for each nest in this dataset.
Attribute:
Attribute_Label: Nest_no
Attribute_Definition:
Unique field identifier of each nest discovered within the study area in a given year. Usually, a concatenation of the observers initials and sequential numbering (three-digit numbers with no leading initials indicate nests found on pre-established plots).
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Unique field identifier of each nest discovered within the study area in a given year.
Attribute:
Attribute_Label: Status_Found
Attribute_Definition: The status of the nest at the time of initial discovery.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: LAYING
Enumerated_Domain_Value_Definition:
Nest was found during egg laying. All eggs fresh and more eggs added after initial discovery.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: INCUBATING
Enumerated_Domain_Value_Definition:
Nest was found during incubation. Eggs warm at discovery and eggs showed signs of development by candling or floatation.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: PREDATED
Enumerated_Domain_Value_Definition:
Nest had already been destroyed at the time of discovery. To be considered a nest it would have to have significant down present and/or egg shells identifiable as a Spectacled Eider.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ABANDONDED
Enumerated_Domain_Value_Definition:
Eggs present but cold. No sign that a female ever returned to the nest.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FOUNDABAN
Enumerated_Domain_Value_Definition:
"Found abandoned." Eggs present but cold. No sign that a female ever returned to the nest.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: HATCHED
Enumerated_Domain_Value_Definition:
Nest already hatched when discovered. Hatched egg shell membranes present.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DUCKLINGS
Enumerated_Domain_Value_Definition: Hatched ducklings present in the nest bowl.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: TRAPPED
Enumerated_Domain_Value_Definition:
Incubating female observed and captured (usually by mist net) at initial discovery.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NONVIABLE
Enumerated_Domain_Value_Definition: Nonviable eggs present in nest.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: Clutch_size
Attribute_Definition:
New eggs were uniquely marked with permanent ink at each nest visit. Clutch size is the total number of new eggs known to have been laid into a nest bowl.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 12
Attribute_Units_of_Measure: eggs
Attribute:
Attribute_Label: Missing_eggs
Attribute_Definition:
Total number of marked eggs that were known to have disappeared before hatch. Usually as a result of partial clutch predation or flooding.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 10
Attribute_Units_of_Measure: eggs
Attribute:
Attribute_Label: Addled_eggs
Attribute_Definition:
Total number of addled or infertile eggs identified in a clutch by egg candling or post hatch inspection of the nest. Blank cells indicate that the number of addled or infertile eggs was not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 6
Attribute_Units_of_Measure: eggs
Attribute:
Attribute_Label: Date_found
Attribute_Definition:
Date of nest discovery; the first day nest monitoring began for the estimation of nesting success.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1991-05-31
Range_Domain_Maximum: 2022-06-12
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: Previous_visit
Attribute_Definition: The last day that a nest was checked and known to be alive.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1991-06-03
Range_Domain_Maximum: 2022-06-19
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: Last_visit
Attribute_Definition:
The last day that a nest was checked. For successful nests the Previous Visit and Last Visit will be the same date. The three dates of Date Found, Previous Visit, and Last Visit are the required input to the program MARK nest survival analyses (White and Burnham 1999).
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1991-06-08
Range_Domain_Maximum: 2022-06-19
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: Status _final
Attribute_Definition: The status of the nest at the time of the final nest visit.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: LAYING
Enumerated_Domain_Value_Definition:
Nest was last checked during egg laying. All eggs fresh and more eggs added after initial discovery.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: INCUBATING
Enumerated_Domain_Value_Definition:
Nest still being incubated at final visit. Eggs warm at discovery and eggs showed signs of development by candling or floatation.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: PREDATED
Enumerated_Domain_Value_Definition:
Nest had been destroyed at the time of final visit. This would most frequently be a direct result of predation.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ABANDONDED
Enumerated_Domain_Value_Definition:
Eggs present but cold. No sign that a female ever returned to the nest since the previous visit.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FOUNDABAN
Enumerated_Domain_Value_Definition:
"Found abandoned." Eggs present but cold. No sign that a female ever returned to the nest since the initial visit.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: HUMANABAN
Enumerated_Domain_Value_Definition:
"Human abandoned." Eggs present but cold. No sign that a female ever returned to the nest since the previous visit and the female was captured or attempted capture on the previous visit. In these cases, we assumed the nest was abandoned as a result of human researcher disturbance.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FLOODED
Enumerated_Domain_Value_Definition: Nest was destroyed as a direct result of tidal flooding.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: HATCHED
Enumerated_Domain_Value_Definition:
Nest already hatched when discovered. Hatched egg shell membranes present.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DUCKLINGS
Enumerated_Domain_Value_Definition: Hatched ducklings present in the nest bowl.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: TRAPPED
Enumerated_Domain_Value_Definition:
Incubating female observed and captured (usually by mist net) at initial discovery.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NONVIABLE
Enumerated_Domain_Value_Definition: Entire clutch addled or infertile.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NODATES
Enumerated_Domain_Value_Definition:
Indicates a nest where no egg candling or floatation data were recorded and nests were not revisited for determination of nesting success. This primarily occurred in 1991 when research was focused on other species or cases where a nest could not be relocated for some reason.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: OTHER
Enumerated_Domain_Value_Definition:
Final status not adequately described by previous codes. Usually described in comments field.
Enumerated_Domain_Value_Definition_Source: Author defined
Attribute:
Attribute_Label: Initiation_Date
Attribute_Definition:
Estimated date that a nest was initiated. For nests found during laying this was calculated by back dating from the date found assuming one egg laid per day. For nests found during incubation this was calculated by subtracting incubation stage estimated from egg candling (Weller 1956) or floatation (Westerskov 1950) and back dating assuming one egg laid per day. Initiation dates that are blank indicate that there was insufficient information to estimate initiation date. This would always be the case for nests found predated or cases where incubation stage by egg candling or floatation were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1991-05-24
Range_Domain_Maximum: 2022-06-06
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: Hatch_date
Attribute_Definition:
Estimated date that a nest hatched or would likely hatch. Based on direct observation of hatched ducklings or pipping eggs, or estimated based on egg candling (Weller 1956) and bounded by any post hatch nest visit. Hatch dates that are blank indicate that there was insufficient information to estimate hatch date. This would always be true for nests found predated or cases where incubation stage by egg candling or floatation (Westerskov 1950) were not recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1991-06-23
Range_Domain_Maximum: 2022-07-03
Attribute_Units_of_Measure: Date (YYYY-MM-DD)
Attribute:
Attribute_Label: Comments
Attribute_Definition:
Comments associated with the nest visits and banding. Blank cells indicate that no comments were recorded.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Comments associated with the nest visits and banding.