Heligoland as an ornithological observatory : the result of fifty years' experience / by Heinrich Gätke ; translated by Rudolph Rosenstock

• Migration of birds.--Changes in the colour of the plumage of birds without moulting.--Account of the birds observed in Heligoland.

Ämnesord

Birds  -- Germany -- Helgoland (LCSH)

Birds  -- Migration (LCSH)

Fåglar  -- Tyskland -- Helgoland (sao)

Flyttfåglar  (sao)

birds  (agrovoc)

animal migration  (agrovoc)

germany  (agrovoc)

Klassifikation

QL690.G3 (LCC)

598.0943512 (DDC)

Ugg (kssb/8 (machine generated))