HOME >> BIOLOGY >> NEWS
Beaver, Architects To The Birds

andoned. In the first stage, a stream is dammed and a pond forms, providing a combination of wooded cover and surface water.

In the old active stage the dam is wider and the pond enlarged. Tree trunks, but little overhead cover remain. The pond is somewhat channelized with open water mixed with shrubs and herbaceous ground cover. In the abandonment stage, the dam, no longer maintained, breaks and the water level decreases. Herbaceous and shrubby cover characterize this stage.

All six of the Commonwealth's common breading waterfowl were found on beaver ponds in Pennsylvania -Canada goose, wood duck, green winged teal, American black duck, hooded merganser and mallard. Overall, waterfowl used all stages of beaver ponds, but were more common on new active ponds and old active ponds. These areas produced the most broods. Wood duck, mallard and hooded merganser were the most common species seen. Geese prefer the more open older and abandoned ponds, while wood duck, hooded merganser and black duck used areas with more cover.

Beaver ponds also create habitats for marsh and song birds. The American Bittern and Virginia Rail, both secretive marsh birds, were found in older ponds. Among the wetland-dependent song birds, the Louisiana waterthrush and Acadian flycatcher were only found at active ponds, the alder flycatcher and red-winged blackbird prefer older ponds and the swamp sparrow, common yellowthroat and veery were found in all beaver pond habitats.

"A beaver pair's goal in building a dam is to create a pond where they can build a lodge, hide from predators in the water, raise offspring and store food for the winter," says Prosser. "In the process, they are creating a variety of wetland habitat for waterfowl and other wetland-dependent birds."

Editor: Ms. Prosser may be reached at 814-865-2180 or djp137@psu.edu.
Dr. Brooks may be reached at 814-863-1596 or '"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
5-Aug-1998


Page: 1 2 3

Related biology news :

1. Birds show superior listening skills
2. Birds use herbs to protect their nests
3. Birds do it. Bugs do it. But why dont we?
4. Birds and humans have similar shopping habits
5. Chemical evidence proves the old adage, Birds of a feather flock together
6. Birds of prey spiralling to a kill
7. Birds beware! Pinecones armed and dangerous
8. Fossil Footprints Show Foot-Movement Similarity In Dinosaurs And Birds
9. Urban Ecology Study Watches Birds On The Web
10. Coastal Birds "Feel" Their Prey Under The Sand
11. At Night, Birds May Review The Songs They Learn During The Day

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/11/2017)... April 11, 2017 Crossmatch®, a globally-recognized ... solutions, today announced that it has been awarded ... Projects Activity (IARPA) to develop next-generation Presentation Attack ... "Innovation has been a driving force within ... will allow us to innovate and develop new ...
(Date:4/5/2017)... SEATTLE , April 5, 2017  The Allen ... the Allen Cell Explorer: a one-of-a-kind portal and dynamic ... large-scale 3D imaging data, the first application of deep ... edited human stem cell lines and a growing suite ... the platform for these and future publicly available resources ...
(Date:3/30/2017)... -- On April 6-7, 2017, Sequencing.com will host the world,s ... at Microsoft,s headquarters in Redmond, Washington ... health and wellness apps that provide a unique, personalized ... is the first hackathon for personal genomics and the ... the genomics, tech and health industries are sending teams ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... for two-dimensional representations of a complex biological network, a depiction of a system ... big mess,” said Dmitry Korkin, PhD, associate professor of computer science at Worcester ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... States multicenter, prospective clinical study that demonstrates the accuracy of the FebriDx® ... identifying clinically significant acute bacterial and viral respiratory tract infections by testing ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... first-ever genomics analysis platform specifically designed for life science researchers to analyze ... pioneering researcher Rosalind Franklin, who made a major contribution to the discovery ...
(Date:10/11/2017)... ... ... a basic first aid supply for any work environment, but most personal eye wash can ... a dangerous substance enters both eyes? It’s one less decision, and likely quicker response time ... , “Whether its dirt and debris, or an acid or alkali, getting anything in your ...
Breaking Biology Technology:
Cached News: