Realm: Terrestrial
Climate: Temperate
Biome: Temperate broadleaf and mixed forests
Central latitude: 46.100850
Central longitude: 24.825530
Duration: 6 years, from 2014 to 2019

20601 records

114 distinct species

Across the time series Parus major is the most frequently occurring species

Methods

Point count surveys annually in the course of eight-week research seasons running between June and August. Point count stations were located at 500m intervals along each of the three transects for each village in the study area, giving a per-year total of 13 point counts per east and west transect, and nine point counts per central transect. The 2017 point count locations were very similar to those of 2015 and 2016. Some point counts from 2014 and 2013 were removed in 2015 due to proximity to a point on another transect. Each point count lasted 10 minutes, with all individuals seen or heard being counted. The surveys began soon after dawn (between 0545 and 0615), and were usually completed before midday. All observations were limited to a 50m radius from the observer. The time of year and amount of mown grass will affect the numbers and species of birds being recorded. Also as the morning progresses, there is a very noticeable decrease in the amount of bird song and activity. So, points further along a transect tend to have fewer birds. Most surveys were repeated, walking the transect in the opposite direction to compensate for the time of day effect.

Citation(s)