Dang bird report for 2007---

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Post  sherrymskt on April 8th 2008, 9:04 pm

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Dang bird report for 2007---

Post  sherrymskt on April 8th 2008, 9:02 pm

http://www.nps.gov/caha/naturescience/upload/CAHA%20Piping%20Plover%20Report%20(2007)-Pgs.%201-11.pdf

CHNS 2007 Piping Plover Report.....just sum that grabbed my attention here. check out the report... pretty interesting! heres a lil section of report:


Nest Loss/Abandonment
Five nests were either lost to weather, predation or were abandoned during the 2007 breeding
season. Nest 1, a two-egg nest discovered May 3rd on Cape Point was lost during a Nor’easter storm
on May 7th. It is unknown if the eggs were blown out of the nest scrape in the 50-60 mph winds,
buried under the sand, or taken by a predator. The loss was discovered during a survey for plover
nests on May 8th. A single-egg nest was discovered the same day, more than eight feet away from
the first nest, and based on the timing is believed to be a third egg from the pair and was designated
as Nest 2. Based on timing and location, this egg was not believed to be a single egg which rolled
out of the Nest 1 scrape. The lone egg in Nest 2 was discovered missing the next day, May 9th. Nest
3 was discovered May 10th in a shell bed behind the dunes at Cape Point. Because of evident
predator signs in the area and the recent loss of an incomplete nest to predation, a predator exclosure
was erected that day. The exclosure was accepted by an adult within 30 minutes of the exclosures
installation. Both birds were observed on or around the nest, either separately or together up until
May 13th. The nest was determined to be abandoned on May 14th. The nest was designated as
belonging to Pair 2, but it is possible, based on timing and territory, that it was a fourth egg from Pair
1. Nest 6 was discovered May 26th in the territory of Pair 1. It was an incomplete clutch of two eggs
and was in close proximity to many least tern scrapes. The nest was monitored from a distance for
several days, and while birds were seen in the area, none were seen approaching or on the nest. By
June 4th it was determined that the nest had been abandoned. Nest 8 was discovered June 7th, with
one egg, in the western end of the Cape Point closure in a shell bed behind the dunes. On June 10th,
7
during a regular scheduled survey, two eggs were seen in the nest scrape, but on June 12th the eggs
were gone and there were both raccoon and opossum tracks in the area of the nest scrape.
Chick Mortality
Of the 17 chicks that hatched, 13 were lost prior to fledging. The first brood, from Nest 4 at Cape
Point, lost three of four hatchlings. Two were predated by day 3, and one by day 13. The second
brood, from Nest 5 at Cape Point, lost both of the two hatchlings by days 2 and 5. The third brood,
Nest 7 on Ocracoke, lost all four of the hatchlings; two by day 1, and then one on day 4 and the last
remaining chick had disappeared by day 5.
Although the staff has opinions with varying levels of confidence on what may have caused
mortality in different situations, mortality cause is characterized as unknown unless specific
evidence can support a cause. Potential causes are discussed in following sections of this report
even though the mortality is characterized as “unknown”. As in past years, the majority of chick
mortality occurred within ten days of hatching.
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