Charles R Brown,Erin A Roche,Mary Bomberger Brown
Charles R Brown
Variation in group size is characteristic of most social species. The extent to which individuals sort among group sizes based on age may yield insight into why groups vary in size and the age-specific costs and benefits of different social...
Factors that influence vital rates of Seaside and Saltmarsh sparrows in coastal New Jersey, USA [0.03%]
影响美国新泽西州沿海地区海滨燕雀和盐沼燕雀生命表参数的因素
Samuel G Roberts,Rebecca A Longenecker,Matthew A Etterson et al.
Samuel G Roberts et al.
As saltmarsh habitat continues to disappear, understanding the factors that influence saltmarsh breeding bird population dynamics is an important step for the conservation of these declining species. Using five years (2011 - 2015) of demogr...
Jennifer A H Koop,Dale H Clayton
Jennifer A H Koop
Two methods commonly used to quantify ectoparasites on live birds are visual examination and dust-ruffling. Visual examination provides an estimate of ectoparasite abundance based on an observer's timed inspection of various body regions on...