All the birds of the world - Hoyo Calduch, Josep del; Allen, Richard, 1964-; Arlott, Norman; Barnes, Eustace, 1963-; Burn, Hilary, 1946-; Byers, Clive; Cox, John, 1967-; Desbordes, François, 1962-; Elliott, Martin; Gilbert, Al; Harris, Alan, 1957-; Hathway, Ren; et al. (Lynx, 2020)