Study on display sequences in Cotton Pygmy-Goose Nettapus Coromandelianus Coromandelianus Gmelin
Journal Title: Journal of Research in Biology - Year 2011, Vol 1, Issue 5
Abstract
The pairing and display sequence of Cotton Pygmy-goose (Nettapus coromandelianus coromandelianus Gmelin) in Eastern Assam was observed from April 2007 to July 2008. The frequency of head movement (up-down and left-right) are found to be 0.288 and 0.28 per second. Courtship bouts occurred in groups averaging 5.7 birds, with a male: female ratio of 1.1:1. Several new displays and vocalizations are described. Early pair bonds appeared tenuous and were continually tested until nest-searching activities began in May. Birds in groups displayed and vocalized more than paired birds, and birds displayed and vocalized more or less equally throughout the period with mild rainy climate. Early pairing may be related to a bird’s condition, climatic condition, success in obtaining a nesting site, and increased productivity
Authors and Affiliations
Upadhyaya S, Saikia PK
Keywords
Related Articles
- EP ID EP561617
- DOI -
- Views 72
- Downloads 0
Cyclin D1 gene polymorphism in Egyptian breast cancer women
Background: Cyclin D1, a key regulator of G1 to S phase progression of the cell cycle, is strongly established as an oncogene with an important pathogenetic role in many human tumors; therefore any genetic variations tha...
Fuel wood burning and its effect on the environment with Reference to tribal villages of Bolangir, Orissa, India
Studies on air pollution due to burning of fuel wood for cooking purpose is alarming day by day in the tribal villages of Bolangir Dist. of Orissa. About 85 household are selected for the study, which burn about 254 tonn...
Ichthyodiversity of the Rangavali Dam, Navapur, District Nandurbar, Maharashtra State
The study area was Rangavali dam of Navapur, district Nandurbar (Maharashtra State) India. This dam has not received much attention by limnologist and this prompted us to sample the fishes throughout the year to assess t...
Avifaunal diversity of Koradi Lake in Nagpur District of central India
Birds, the feathered bipeds have immense ecological value and serve as the bio indicators of ecosystem health. Present study deals with the study on the avifaunal diversity of Koradi lake (Lat.- 21°15’0N; Longi.- 79°5’60...
Biorestraining potentials of marine macroalgae collected from Rameshwaram, Tamil nadu
The marine ecosystem is the treasure place for many natural resources. In this study, about five different marine macroalgae were chosen to study the antibacterial activity and larvicidal activity of Aedes sp. About five...