scholarly journals Checklist of bird species in dharmadam estuary in kannur district of kerala

2021 ◽  
Vol 8 (1) ◽  
pp. 5-7
Author(s):  
Santhwana A ◽  
Venkitachalam R ◽  
Sridhu Prakash
Keyword(s):  
Seasonal Variation ◽  
Bird Species ◽  
Migratory Bird ◽  
Term Study ◽  
Long Term Study ◽  
Short Period ◽  
Near Threatened

A total of 20 bird species belongs to 7 orders and 11 families were recorded in Dharmadam estuary in Kannur district. The record of migratory bird Eurasian Curlew and two species near threatened birds within a short period of study and this record indicate that Dharmadam estuary may be attracting more number of migratory bird species. A long-term study is needed to understand the seasonal variation of the bird species in Dharmadam estuary in Kannur district.

Nest cameras do not affect nest survival in a meadow-nesting shorebird

2020 ◽  
pp. 1-10
Author(s):  
VOLKER SALEWSKI ◽  
LUIS SCHMIDT
Keyword(s):  
Nest Survival ◽  
Bird Species ◽  
Conservation Strategies ◽  
Survival Models ◽  
Northern Germany ◽  
Term Study ◽  
Long Term Study ◽  
Limosa Limosa ◽  
Study Sites

Summary Identifying the fate of birds’ nests and the causes of breeding failure is often crucial for the development of conservation strategies for threatened species. However, collecting these data by repeatedly visiting nests might itself contribute to nest failure or bias. To solve this dilemma, automatic cameras have increasingly been used as a time-efficient means for nest monitoring. Here, we consider whether the use of cameras itself may influence hatching success of nests of the Black-tailed Godwit Limosa limosa at two long-term study sites in northern Germany. Annually between 2013 and 2019, cameras were used to monitor godwit nests. In 2014 and 2019, nests were randomly equipped with cameras or not, and nest survival checked independently of the cameras. Nest-survival models indicated that survival probabilities varied between years, sites and with time of the season, but were unaffected by the presence of cameras. Even though predation is the main cause of hatching failure in our study system, we conclude that predators did not learn to associate cameras with food either when the cameras were initially installed or after they had been used for several years. Cameras were thus an effective and non-deleterious tool to collect data for conservation in this case. As other bird species may react differently to cameras at their nests, and as other sets of predators may differ in their ability to associate cameras with food, the effect of cameras on breeding success should be carefully monitored when they are used in a new study system.

scholarly journals SEASONAL VARIATION IN SEX RATIO OF FLEDGLING AMERICAN KESTRELS: A LONG TERM STUDY

2002 ◽  
Vol 114 (4) ◽  
pp. 474-478 ◽  
Author(s):  
MATTEO GRIGGIO ◽  
FRANCES HAMERSTROM ◽  
ROBERT N. ROSENFIELD ◽  
GIACOMO TAVECCHIA
Keyword(s):  
Seasonal Variation ◽  
Sex Ratio ◽  
Term Study ◽  
Long Term Study ◽  
American Kestrels

Repeated Botox Injections Deemed Safe in Long-Term Study

2005 ◽  
Vol 36 (1) ◽  
pp. 2
Author(s):  
BETSY BATES
Keyword(s):  
Term Study ◽  
Long Term Study

Long-Term Study Proves Permanent Filler Safety

2010 ◽  
Vol 41 (4) ◽  
pp. 23
Author(s):  
BRUCE JANCIN
Keyword(s):  
Term Study ◽  
Long Term Study ◽  
Permanent Filler

Quinapril for Sclerosis Failed in Long-Term Study

2007 ◽  
Vol 38 (6) ◽  
pp. 14
Author(s):  
DAMIAN MCNAMARA
Keyword(s):  
Term Study ◽  
Long Term Study

High-Dose Etanercept Found To Be Safe in Long-Term Study

2007 ◽  
Vol 38 (10) ◽  
pp. 45
Author(s):  
MARY ANN MOON
Keyword(s):  
High Dose ◽  
Term Study ◽  
Long Term Study

Long-Term Study Sheds Light on Neonatal NEC

2008 ◽  
Vol 41 (2) ◽  
pp. 31
Author(s):  
BRUCE JANCIN
Keyword(s):  
Term Study ◽  
Long Term Study
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