Contribution of Observation.org to Ebba2 (Second European Breeding Bird Atlas)

Study Extent

Observers can submit single observations or complete checklists. Observations with the following codes are used for the project: *Pair observed in suitable nesting habitat in breeding season *Nests with young seen or heard *Nests containing eggs *Adult carrying a faecal sac or food for young *Recently fledged young (nidicolous species) or downy young (nidifugous species) *Used nest or eggshells found (occupied or laid within period of survey) *Distraction-display or injury-feigning *Nest-building or excavating of nest-hole *Brood patch on adult examined in the hand *Permanent territory presumed through registration of territorial behaviour (song, etc.) on at least two different days a week or more apart at same place *Singing male(s) present (or breeding calls heard) in breeding season *Agitated behaviour or anxiety calls from adults *Visiting probable nest-site *Courtship and display *Non breeding (species observed but suspected to be still on migration or to be summering non-breeder) *Adults entering or leaving nest-site in circumstances indicating occupied nest (including high nests or nest holes, the contents of which cannot be seen) or adult seen incubating *Species observed in breeding season in possible nesting habit

Sampling

-

Quality Control

Observations are validated by Observation.org admins and local parties. The last group recieves a data dump to check.

Method steps

1. -

A list with 784 bird species provided by the EBBA team http://www.ebba2.info/what-is-ebba2-and-why-ebba2/

1. none

Europe including part of Russia excluding the Netherlands and Belgium. See for details http://euro.observation.org/start_ebcc.php?srt=0&from=2014-01-01&to=2018-01-01