A comparison between basic Atlas and tetrad techniques

Author(s): Ferguson-Lees, I.J. & Sharrock, J.T.R.

Published: January 1971

Journal: Bird Study Volume: 18

Digital Identifier No. (DOI): 10.1080/00063657109476317

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.

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The training will consist of two weekly online sessions of about 2 hours each, complemented by supported self-study exercises which will be provided after each session. The training will be run by BTO staff members Nick...

A comparison between basic Atlas and tetrad techniques

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BirdTrack migration blog – early spring

BTO Data Reports

Raptor ID (2 sessions, Wednesdays 10am)