A pole, extendable from 2 to 8 m, with a nylon-mesh collecting net, was used to retrieve eggs from nests of Great Blue Herons (Ardea herodias) in the canopy of floodplain forests. A total of 200 eggs was collected for contaminant analysis from ten colonies along the upper Mississippi River during the spring of 1993. Low egg breakage (1%) and acceptable survival of embryos in an incubator to pipping (55%) indicated that the device was useful.
Citation Information
| Publication Year | 1995 |
|---|---|
| Title | Evaluation of an extendable pole-net to collect heron eggs in the canopy of tall trees |
| Authors | R. K. Hines, T. W. Custer |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Colonial Waterbirds |
| Index ID | 1003178 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Upper Midwest Environmental Sciences Center |