Red-billed teal floods in semiarid South Africa: a north-temperate contrast
Article Abstract:
Many waterfowl feed and breed on the ephemeral wetlands of arid and semiarid regions, but research into waterfowl has tended to focus on those species which occur in temperate regions. However, recent research has looked at the foods of red-billed teal on the Nyl River floodplain in South Africa. It was found that native terrestrial seeds are the main food item of breeding and postbreeding males and females. Red-billed teal are able to reproduce while eating a relatively herbivorous diet, and this ensures that they can breed during dry years.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1996
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Mallard duckling growth and survival in relation to aquatic invertebrates
Article Abstract:
Little is known about the critical early developmental stage of waterfowl, but a better understanding is essential for successful and effective management of breeding mallards. A new study measures the growth and survival of captive ducklings during their prefledgling stage and tests for growth variations depending upon birth weight and aquatic invertebrate densities. The study supports previous recommendations that wetlands containing high densities of invertebrates are beneficial to duckling growth and survival.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1998
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Estimation of apparent metabolizability in herbivorous wildfowl with plant pigments
Article Abstract:
Recent research into apparent metabolizability in free-ranging herbivorous wildfowl has used a range of plant pigments or chromogen, which act as a naturally occurring indigestible marker. Particular attention was given to possible areas which could produce inconsistent apparent metabolizability estimates. It was found that chromogen play a useful role in estimating apparent metabolizability for free-ranging geese and herbivorous ducks, but that there is a high level of variation.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1996
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