Keith A. Hobson

TL;DR: It is found that egg size varied among local populations of the critically endangered Balearic shearwater Puffinus mauretanicus, an unexpected result at such a small spatial scale.

TL;DR: This is the peer reviewed version of the following article: Sutherland, W. and Wordley, C. (2020), Ensuring tests of conservation interventions build on existing literature is published in final form at www.cobi.org.

TL;DR: In this article, the authors used 806 hair samples collected from Western Hudson Bay (WH) polar bears from 1993−1994 and 2004−2016 to examine variations in isotopic niche size and diet within the population, patterns in foraging ecology over time, and the relationship between hair isotopic values and sea ice dynamics.

TL;DR: The contribution to annual mortality of migrating monarch butterflies due to collisions with vehicles is poorly understood but likely significant as mentioned in this paper, and the authors suggest that mortality could occur at such sites if timing of migration and weather conditions conspire to force a large proportion of the migrating population across highways at low altitude.