This data set contains data describing Grasshopper Sparrow nests. These nests were primarily found by rope dragging but also on surveys (see RI Survey Data Set), flushing birds during other activities, and via behavioral observations. We described nest contents and monitored nest fate via visits every 2-3 day and by placing an iButton placed in the center of the nest flush with the bottom of the nest cup and comparing temperature traces to a second iButton placed outside of the nest to determine the timing of nest failure and other metrics of incubation/brooding behavior. We compiled counts of partial egg loss, partial brood loss, and estimated causes of nest failure, comparing the timing of these events with KNZ-collected meteorological data to determine the temporal association between rainstorms and nest abandonment.
Variable Measured: Location, date found, egg measurements, bird sex, stage of nest, inferred fate of nest.
Codes Used:GRSP Grasshopper Sparrow (Ammodramus savannarum)BHCO Brown-Headed Cowbird (Molothrus ater)NOAA National Oceanic and Atmospheric Administration
Color Band Color Abbreviations:A GrayB (Light) BlueD Dark (Blue)G GreenK BlackO OrangeP PinkR RedS SilverW WhiteY Yellow Observers: AB W. Alice BoyleADT Alaina ThomasAJH Alex HenryAMC Amanda CharpinelBJR Breyana RamseyBV Bram VerheijenCES Chelsea SinkCRW Caitie WeichmannDDH Destiney HettDJS Dylan SmithEJH Emily HudsonEJW Emily WilliamsHN Hunter NedlandJMG Jackie GehrtKRW Kyle WaitLTA Lauren AngermeyerMLG Michaela GustafsonSKW Sarah WinnickiSVR Suzy Replogle Curnutt Method Found:BO Behavioral ObservationRW Random WalkingRD Rope DraggingOT OtherUN Unknown
Stage Found:BU BuildingLAY LayingIB IncubatingNG NestlingsFL Fledged/Fledglings Inferred Fate:SU Fledged =1 GRSPSC Fledged =1 GRSP and =1BHCOCO Fledged only BHCO or abandoned due to cowbird parasitismPR Nest contents eatenAB Abandoned for no apparent reasonTR Trampled by livestockWE Nest flooded, nestlings died of exposureHU Suspected human-caused abandonment or destruction
For additional metadata information see: http://lter.konza.ksu.edu/sites/default/files/DC.pdf
For additional methods information see: http://lter.konza.ksu.edu/sites/default/files/MM.pdf