Contents written by Christy Bridgeman for Perth and Kinross Countryside Trust and GreenTweed Eco for the 'Perthshire Primary Schools Birdbox Project'. Editing by Catherine Leatherland. Bird boxes for schools crafted by Tom Rawson. 

Bird habitat, migration and dietary data from RSPB, BTO, Scottish Wildlife Trust and NatureScot

Image credits (in order of appearance) 

Header and icon image: Nick Goodrum / Flickr (CC BY 2.0)

Ian Biggs for PKCT (All Rights Reserved)

Mathias Appel / Flickr (Public Domain)

Bernard Spraggs NZ / Flickr (Public Domain)

Garry Knight / Flickr (CC BY 2.0)

Cattan2011 / Flickr (CC BY 2.0)

James Johnstone / Flickr (CC BY 2.0)

Rob Mitchell / Flickr (Public Domain)

Bernard Spraggs NZ / Flickr (Public Domain)

Gary Todd / Flickr (Public Domain)

Waferboard / Flickr (CC BY 2.0)

Charles Gates / Flickr (CC BY 2.0)

Chris Lovelock / Flickr (CC BY 2.0)

Adam__R / Flickr (CC BY 2.0)

Ekaterina Chernetsova / Flickr (Public Domain)

I am BirdsAsPoetry.com / Flickr (CC BY 2.0)

Petras Gagilas / Flickr (CC BY 2.0)

Luiz Lapa / Flickr (CC BY 2.0)

The Green Man / Flickr (Public Domain)

Kathy Munsel / Flickr (Public Domain)

Malibuskiboats / Flickr (Public Domain)

Pete Beard / Flickr (CC BY 2.0)

Caroline Legg / Flickr (CC BY 2.0)

Vine House Farm / Flickr (Public Domain)

Bruce Marlin / Wikimedia Commons (CC BY-SA 3.0)

Nicholls of the Yard / Flickr / Flickr (CC BY 2.0)

Caroline Legg / Flickr (CC BY 2.0)

Michele Lamberti / Flickr (Public Domain)

ScotGovRural / Flickr (CC BY 2.0)

Per Harald Olsen / Norwegian University of Science and Technology (CC BY-SA 3.0)

Andrew Arg / Flickr (CC BY 2.0)

US Fish and Wildlife Service Southeast / Flickr (Public Domain)

Reese Grayson / Flickr (CC BY 2.0)

Ruth Hartnup / Flickr (CC BY 2.0)

Bernard Spraggs NZ / Flickr (CC BY 2.0)

Muhammad Younas / Flickr (CC BY 2.0)

Radovan Vaclav / Flickr (CC BY 2.0)

Wildlife Terry / Flickr (Public Domain)

Pete Beard / Flickr (CC BY 2.0)

Alaska Fish and Wildlife Service / Flickr (Public Domain)

Christy Bridgeman / PKCT, Forestry and Land Scotland (All Rights Reserved)

Marianne Bevis / Flickr (CC BY-ND 2.0)

Mike Prince / Flickr (CC BY 2.0)

Tony Hisgett / Flickr (CC BY 2.0)

Shenandoah National Park / Flickr (Public Domain)

Ray Best - Through the Lens / Flickr (CC BY 2.0)

Mathias Appel / Flickr (Public Domain)

Chris Robertshaw / Flickr (CC BY 2.0)

Rob Mitchell / Flickr (Public Domain)

Jo Garbutt / Flickr (CC BY 2.0)

PxHere (Public Domain)

Oatsy40 / Flickr (CC BY 2.0)

Pete Beard / Flickr (CC BY 2.0)

Brad Greenlee / Flickr (CC BY 2.0)

Mike Mozart / Flickr (CC BY 2.0)

Larry Lamsa / Flickr (CC BY 2.0)

Per Harald Olsen / Norwegian University of Science and Technology  (CC BY 2.0)

Michael Sovran / Flickr (Public Domain)

Peter Daniel / Flickr (CC BY 2.0)

David Merrett / Flickr (CC BY 2.0)

James Johnstone / Flickr (CC BY 2.0)

Daniel Stepp / Flickr (CC BY 2.0)

Ray Best - Through the Lens / Flickr (CC BY 2.0)

BeckwithZinkDiane / Flickr (CC BY 2.0)

Ian Sane / Flickr (CC BY 2.0)

Conal Gallagher / Flickr (CC BY 2.0)

Robert Taylor / Flickr (CC BY 2.0)

Gulcinb / Flickr (CC BY 2.0)

Damian Bakarcic / Flickr (CC BY 2.0)

Jeremy Atkinson / Flickr (CC BY 2.0)

Aqua Mechanical / Flickr (CC BY 2.0)

tdlucas5000 / Flickr (CC BY 2.0)

Drew de F Fawkes / Flickr (CC BY 2.0)

ScotGov Rural / Flickr (CC BY 2.0)

Caroline Legg / Flickr (CC BY 2.0)

Michiel Jelijs / Flickr (CC BY 2.0)

Trish Hamme / Flickr (CC BY 2.0)

Tejvan Pettinger / Flickr (CC BY 2.0)

Suzie Tremmel / Flickr (CC BY 2.0)

Sound Clips (in order of appearance) 

Marie-Lan Taÿ Pamart / Xeno-Canto (CC BY-SA 4.0)

Marie-Lan Taÿ Pamart / Xeno-Canto (CC BY-SA 4.0)

Marie-Lan Taÿ Pamart / Xeno-Canto (CC BY-SA 4.0)

Alejandro Erickson / Xeno-Canto (CC BY-SA 4.0)

Agris Celmins / Xeno-Canto (CC BY-NC-ND 4.0)

Michel Veldt / Xeno-Canto (CC BY-NC-SA 4.0)

Mauricio Cuellar Ramirez (@Birding.travel) / Xeno-Canto (CC BY-NC-SA 4.0)

Dan Lombard / Xeno-Canto (CC BY-NC-SA 4.0)

Bodo Sonnenburg / Xeno-Canto (CC BY-NC-SA 4.0)

Alain Malengreau / Xeno-Canto (CC BY-NC-SA 4.0)

Michel Veldt / Xeno-Canto (CC BY-NC-SA 4.0)

Guillaume Bigayon / Xeno-Canto (CC BY-NC-SA 4.0)

Michał Jezierski / Xeno-Canto (CC BY-NC-SA 4.0)

Paul Kelly  / Xeno-Canto (CC BY-NC-SA 4.0)

brickegickel / Xeno-Canto (CC BY-NC-SA 4.0)

Lars Buckx / Xeno-Canto (CC BY-NC-SA 4.0)

Michel Veldt / Xeno-Canto (CC BY-NC-SA 4.0)

Lars Edenius / Xeno-Canto (CC BY-NC-SA 4.0)

Michał Jezierski / Xeno-Canto (CC BY-NC-SA 4.0)

Jacobo Ramil Millarengo /  Xeno-Canto (CC BY-NC-SA 4.0)

Stanley Baldauf / Xeno-Canto (CC BY-NC-SA 4.0)

Timo Schnabel / Xeno-Canto (CC BY-NC-SA 4.0)

Chèvremont Fabian / Xeno-Canto (CC BY-NC-SA 4.0)

Lars Edenius  / Xeno-Canto (CC BY-NC-SA 4.0)

Vincent van der Spek / Xeno-Canto (CC BY-NC-SA 4.0)

Fonts

Titles: Draghia Cornel (dccanim, DaFont) (2013) 'DCC Ash' / DaFont

Subtitles: Dalton Maag (2010) 'Ubuntu' / Google Fonts

Paragraphs and Subheadings: Vincent Connare, Microsoft (1994) 'Comic Sans' / Microsoft Windows, OpenLearn Create

Video credits

Starling murmuration [embedded]:  National Geographic, Jan van  IJken (2016) 'Flight of the Starlings: Watch This Eerie but Beautiful Phenomenon | Short Film Showcase' / Youtube

Skylark flight [embedded]: Wildlife World (2019) 'Bird sounds. Skylark singing and chirping in the spring sky' / Youtube

Woodpecker Drumming [embedded]: George Ewart (2016) 'Great Spotted Woodpecker Drumming' / YouTube