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Time to enter your data
While much of this year's nesting activities have concluded, the work of the NestWatcher still isn't finished. Many of you have spent the summer diligently recording your nest observations in notebooks and on paper datasheets and now is the time to transfer this information into the NestWatch database. If you are unsure about how to do this, please check out our data entry instructions and tutorial video. There have been nearly 4,500 nesting attempts by 84 species entered so far in 2011, and NestWatchers have counted approximately 20,100 eggs and 14,000 fledglings. These totals represent half of the typical amount of data submitted to NestWatch each year, so we know that there is much more data not yet entered. Keep up the good work, and don't hesitate to send us your questions if you are having difficulties entering your data!
Ovenbird, courtesy USFWS
Fledgling bird survival
Mortality of young birds is particularly high after they leave their nests and while they are still developing flying and food gathering skills. Recent research from The Ohio State University helps shed light on what factors improve the likelihood that fledgling birds will survive. In this study, habitat use of 51 Ovenbird and 60 Worm-eating Warbler fledglings was monitored using radio telemetry. Overall, about 33% of these young woodland birds did not survive during a 50-day period after they left their nests and most of these mortalities were the consequence of predation. Birds that spent more time in dense vegetation had a higher probability of survival. These results suggest that survival rates of some fledgling birds may be improved by properly managing habitat. Where dense deer populations have reduced the amount of forest understory vegetation, management practices that increase shrub and sapling densities may be necessary. In your own backyard, please consider leaving areas unmowed and planting native shrubs to provide protection for young birds.
Vitz, A.C. and A.D. Rodewald. 2011. Influence of condition and habitat use on survival of post-fledgling songbirds. The Condor 113(2):400-411.
Thank you for your participation in NestWatch to help science and the birds!
Jason Martin NestWatch and NestCams project leader Cornell Lab of Ornithology 159 Sapsucker Woods Rd Ithaca, NY 14850
The Cornell Lab of Ornithology is a membership institution dedicated to interpreting and conserving the earth's biological diversity through research, education, and citizen science focused on birds. Visit the Cornell Lab's website at http://www.birds.cornell.edu.
Cornell Lab of Ornithology 159 Sapsucker Woods Rd, Ithaca NY 14850 Questions or Comments?
The NestCams season is quickly coming to a close. The Barn Owl nestlings fledged on July 26, but the camera will remain turned on to capture any periodic visits to the nest box in the coming months. The Chimney Swifts also have fledged but continue to roost in the tower along with the adult swifts. Be on the lookout for some exciting changes to the NestCams website in the near future!
At the beginning of each month, NestWatch randomly selects one participant to receive a copy of the NestWatch Common Nesting Birds of North America poster. This month's lucky winner is Robert Wilson. Congratulations, Robert!
There are lots of ways to stay in touch...
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