Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41771
Forty-ninth Christmas bird count. 116. Southern Anne Arundel County, Md
No abstract available.
Authors
C.S. Robbins, R. E. Stewart
Vitamin A and carotene contents of some wildlife foods
In order to determine possible sources of vitamin A for quail, 37 species of insects and other invertebrates were analyzed for vitamin A and for carotene, and 26 species of seeds and fruits were assayed for carotene. The invertebrates showed no trace of vitamin A; but 8 herbivorous invertebrates and the praying mantis contained carotene. Most of the plants contained carotene--some of them a lot (d
Authors
R. B. Nestler, J.V. Derby, J.B. DeWitt
[Book review] Birds' Nests--A Field Guide, by Richard Headstrom
No abstract available.
Authors
C.S. Robbins