This dataset includes captures of mainly Grasshopper Sparrows (GRSP), but includes other songbirds. Each row pertains to an individual captured on a certain day. Individuals can repeat. Most captures include data on age, sex, head-bill, tarsus, wind chord, molt score, fat score, and mass. In many cases, a single feather was collected from each Grasshopper Sparrow for isotopic analyses, and when available, results of those data are included. Some individuals were measured for body composition (fat mass, lean mass, and body water) using a mobile Quantitative Magnetic Resonance (QMR) machine. Most individuals were bled in the field within 5 min of capture. The blood was chilled, centrifuged the same day, and plasma stored frozen for analyses of metabolite concentrations. Red blood cells were stored in lysis buffer for genotyping. All birds were banded with a USFWS band and adults were individually marked using a unique combination of 3 plastic colored leg bands. Birds captured as independent young or nestlings banded prior to fledge were only marked with the USFWS bands. All birds were released at the location of capture.
Codes Used: Species Code: Species Code Common Name Scientific Name BHCO Brown-headed Cowbird Molothrus ater GRSP Grasshopper Sparrow Ammodramus savannarum HESP Henslow Sparrow Ammodramus henslowii Color Band Color Abbreviations: A Gray B Light Blue D Dark Blue G Green K Black O Orange P Pink R Red S Silver W White Y Yellow Age: NG Nestling HY Hatch Year AHY After Hatch Year SY Second Year ASY After Second Year TY Third Year ATY After Third Year U Unknown How aged or sexed: Plumage Young (hatch-year) birds have distinct plumage. Following their first year, GRSP cannot be sexed or aged by plumage CP Cloacal Protuberance present - indicates male in breeding condition BP Brood Patch present - if >0.5, indicates female in breeding condition (males only lose a few belly feathers) OnNest Nestlings found in nest = known age. Birds flushed from nest sexed as females Song Males observed singing prior to capture (females don’t sing) Display Males observed displaying prior to capture (females don’t display) Molecular Molecularly sexed post-hoc Ossification Young (< 4 mo) birds have incomplete ossification Recap If a bird was captured in a previous season, we can age precisely (if HY or NG at time for first capture), or know minimum age (if captured as AHY) Sex: M Male F Female U Unknown CP: 0 No evidence of swelling 1 Very slight thickening 2 Still longer than wide, but noticeably bulging 3 Resembling the drawing in the front of Pyle guide 4 Size of an unripe blueberry 5 Size and color of an ripe blueberry BP: 1 Smooth feathers are dropped and some vascularization is evident, but most of the area is still rather smooth and dark red 2 Vascularization is evident, some wrinkles are present, and some fluid is present under the skin, giving the area a pale, opaque, pinkish color 3 Vascularization is at the maximum extent of the brood patch; the brood patch is thickly wrinkled, and much fluid is present under the skin 4 Wrinkled, vascularization and fluid is mostly gone, skin retains many thin, dry, contracted wrinkles 5 Molting with no vascularization or fluid, most wrinkles gone, and pinfeathers present only on breast with no other flight feather or body molt occurring Molt: 0 No molt 1 Some pin feathers, adventitious flight feather molt, or very beginning stages of complete molt (i.e., dropped feathers but no new feathers grown in) 2 Moderate molt. Multiple feather tracts and/or flight feathers or retricies 3 Most tracts in molt including flight feathers and body Fat: 0 No fat visible in furculum 1 A light covering or partial covering of fat on the inside of the furculum 2 >10% full and <~35% full 3 Roughly half full of fat 4 Furculum ~75% full, fat typically extending out of furcular area at the top and some visible fat in wing pits and lower belly 5 Furculum ~full-slightly bulging. Obvious fat reserves elsewhere on the body 6 Furculum very bulging. Extensive fat reserves elsewhere Observers: AB W. Alice Boyle; AJH Alex Henry; ANB Allison Bays; BV Bram Verheijen; CES Chelsea Sink; CKP Chyna Pei; DDH Destiney Hett; DJS Dylan Smith; EJW Emily Williams; GW Virginia Winder; HN Hunter Nedland; JMG Jackie Gehrt; JMS Joseph Schmidt; KEG Keil Garey; LTA Lauren Angermeyer; MLG Michaela Gustafson; SKW Sarah Winnicki; SLD Sarah Demadura; SVR Suzy Replogle Curnutt
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