Polygons in BirdTrack

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12 Dec 2017 Minsmere Polygon

One of the more frequent questions we receive is in relation to how to create sites which overlap Ordnance Survey (OS) grid square boundaries. The easiest solution to this is to use the polygon tool available on the global data entry portal to outline your site. If you are unfamiliar with using polygons, there is a handy tutorial video on our help page.

Since Bird Atlas 2007–11 ended, we've placed less emphasis on BirdTrack sites needing to fit entirely within OS grid squares. However, drawing the outline of your sites gives valuable extra information for anyone analysing the data. Also, please do give your sites informative names to help with validation.

BirdTrack migration blog – early spring

It may still feel like winter but for some species, the increasing temperatures and lengthening days have already kick-started spring migration, with birds starting to arrive and depart across Britain and Ireland.

Article

Paper call for special HPAI issue

We are putting together a special issue of the BTO journal Bird Study to bring together research documenting the HPAI outbreak and its impacts on wild birds.

Event

Songbird ID (3 sessions, Wednesdays 10am)

This course involves three weekly online sessions of 100 minutes, with a trainer:participant ratio of about 1:30. Participants' microphones are muted during the sessions but there is a large interactive component,...

Project partners

Project partners

Polygons in BirdTrack

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BirdTrack migration blog – early spring

Paper call for special HPAI issue

Songbird ID (3 sessions, Wednesdays 10am)