Egg morphometrics and egg shape coefficients for White-faced Ibis (Plegadis chihi)
Egg size is a useful metric for maternal investment, offspring quality, and contaminant studies. Yet these values and the egg shape coefficients required to estimate egg size are not available for many species, including White-faced-Ibis (Plegadis chihi). We provide egg morphometrics derived from 319 White-faced Ibis eggs sampled at Bear River Migratory Bird Refuge, Great Salt Lake, Utah, from 2010 to 2012. Measured egg length (mean ± SD) was 51.20 ± 1.99 mm, egg width was 36.08 ± 1.15 mm, and whole egg mass was 34.1 ± 3.3 g. Estimated whole egg volume was 34.63 ± 3.73 cm3 and estimated egg shape coefficients were 0.507 for Kv (whole egg and egg contents), 0.547 for Kw (whole egg), and 0.524 for Kw (egg contents only). In addition, we documented expected declines in egg mass over time due to incubation (–0.22 g/d) and desiccation during storage (–0.03 g/d), that should be accounted for prior to analyses that use egg mass of freshly laid eggs.
Citation Information
| Publication Year | 2021 |
|---|---|
| Title | Egg morphometrics and egg shape coefficients for White-faced Ibis (Plegadis chihi) |
| DOI | 10.1676/21-00057 |
| Authors | Mark P. Herzog, Josh T. Ackerman, C. Alex Hartman |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | The Wilson Journal of Ornithology |
| Index ID | 70227888 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Western Ecological Research Center |
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Egg Morphometric Data Obtained for White-faced Ibis Nesting in Bear River Migratory Bird Refuge, Great Salt Lake, Utah (2010-2012)
Mark Herzog
Wildlife Biologist
Josh T Ackerman
Research Wildlife Biologist
Christopher "Alex" Hartman
Wildlife Biologist
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- Data
Egg Morphometric Data Obtained for White-faced Ibis Nesting in Bear River Migratory Bird Refuge, Great Salt Lake, Utah (2010-2012)
This data consists of egg morphometric data from white-faced ibis. Eggs were collected in the field and then measured and dissected in the lab to obtain estimates of length, width and mass. This data supports the following publication: Herzog, M.P., Ackerman, J.T. and Hartman, C.A., 2021. Egg morphometrics and egg shape coefficients for White-faced Ibis (Plegadis chihi). The Wilson Journal - Connect
Mark Herzog
Wildlife BiologistEmailPhoneJosh T Ackerman
Research Wildlife BiologistEmailPhoneChristopher "Alex" Hartman
Wildlife BiologistEmailPhone