Among the first birds to start and last to stop singing each day are robins (Erithacus rubecula). Although most birds mainly sing in summer, most robins in Britain use their voices to defend their ...
For example, the European robin is Erithacus rubecula. It is much smaller than the American robin, Turdus migratorius, which belongs to a different genus. The grouping of families was added to ...
Boletin SAO 21:1-6. Greeney, H, and J. Port. 2010. A nest of Brown Nunlet (Nonnula brunnea) and observations on the nesting of other Ecuadorian Puffbirds. Ornitología Colombiana 9:31-37. Schottler, ...