Social Values of Deserted Island Birds

Pesticide acute toxicity reference values for birds.

Working width, a deserted aspect of Endodontics

Understanding the complexity of the root canal system and the aim to provide successful endodontic treatment has led to the development of newer techniques, instruments, and materials. These recent developments have greatly enhanced the clinician’s ability to achieve biologically-based objectives of root canal treatment. In order to achieve these objectives, it is imperative to accurately deter...

Conservation: Evolutionary Values for All 10,000 Birds

Many biologists and conservation practitioners believe that preserving evolutionary diversity should be a priority. An innovative new study measures the evolutionary distinctness of all the world's birds and identifies the species and locations that capture the highest fraction of avian evolutionary history.

Evolution of reproductive life histories in island birds worldwide.

Island environments typically share characteristics such as impoverished biotas and less-seasonal climates, which should be conducive to specific adaptations by organisms. However, with the exception of morphological studies, broad-scale tests of patterns of adaptation on islands are rare. Here, I examine reproductive patterns in island birds worldwide. Reproductive life histories are influence...

Recent Records of Land Birds from South Farallon Island, California

In the summers of 1964 and 1965 I obtained specimens of 62 species of land birds on South Farallon Island, located in the Pacific Ocean about 30 miles west of San Francisco, California. Among these are 27 species comprising new records for South Farallon, and thus adding considerably to the list of 74 species of land birds previously known to have occurred on the island (see Townsend, 1885 ; Br...