ASPERGILLOSIS IN WINTERING MALLARDS

Aspergillosis in wintering mallards.

Wintering Distribution Changes in Mallards and Black Ducks

Through the use of data compiled by the Audubon Society's annual Christmas Counts, an attempt has been made to trace the distributional changes of wintering Mallards and Black Ducks in the eastern states from 1900 to the present. During this period the Black Duck has increased relative to the Mallard in few if any states (the Great Lakes region), whereas the Mallard has increased nearly everywh...

Effects of Weather on Habitat Selection and Behavior of Mallards Wintering in Nebraska

-Sex and age ratios, habitat selection, spatial characteristics, and time budgets of Mallards (Anas plutyrhynchus) wintering on the Platte River in south central Nebraska were studied from mid-December to early April 197% 1980. The proportion of females and subadults in the population increased substantially from a cold to a mild winter. Radio-tagged Mallards shifted from riverine to canal roos...

Pulmonary Aspergillosis in Ostrich

Stopover ecology of mallards

Bengtsson, Daniel (2016). Stopover ecology of mallards – where, when and how to do what? Linnaeus University Dissertation No 242/2016, ISBN: 978-9188357-00-7. Written in English. The mallard (Anas platyrhynchos) is the most numerous and widespread duck in the northern hemisphere and a model species in ecology and harvest management. Migration is a crucial life stage for many birds and understan...