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Estimating nesting success of Dutch breeding birds

100%

De N. P. W. T., Hagemeijer W. E. J. M., Majoor F. A., Teunissen W. A., Van D. V. R.

Acta Ornithologica

2000

tom 35

nr 1

57-61

In order to understand changes in Dutch breeding bird numbers a Nest Record Scheme was launched in 1994. In the first five years more than 35 000 nest record cards of approximately 150 species were received, and the annual number of cards sent in stabilised around 10 000 from 1996 onwards. Representative five-year estimations of nesting success, based on the daily survival rate according to the Mayfield-method, are possible for 50 species. Annual surveillance of nesting success is in reach for 32 species. Hence, the Nest Record Scheme provides for tens of Dutch breeding birds unique reproductive information. Additionally, since the daily survival rate appears to follow a probability-density function, solving of this function enables precise calculation of the confidence intervals of daily survival rates.

Ograniczanie wyników

1 Acta Ornithologica

1 De N. P. W. T.

1 Hagemeijer W. E. J. M.

1 Majoor F. A.

1 Teunissen W. A.

1 Van D. V. R.

1 2000

Wyniki wyszukiwania

Estimating nesting success of Dutch breeding birds