Woodpecker species, inhabiting the rocky and grassy hills of South Africa, and the Andean flicker is another. The Swiss Ornithological Institute has set up a monitoring program to record breeding populations of woodland birds. This has shown that deadwood is an important habitat requirement for the black woodpecker, great spotted woodpecker, middle spotted woodpecker, lesser spotted woodpecker, European green woodpecker and Eurasian three-toed woodpecker. Populations of all these species increased by varying amounts in the period 1990 to 2008. During this period, the amount of deadwood in the forest increased and the range of the white-backed woodpecker enlarged as it extended
English markers of habitual aspect English markers of habitual aspect The habitual aspect is a form of expression connoting repetition or continuous existence of a state of affairs. In English when present time is referred to, there is no special grammatical marker for the habitual; the simple present is used, as in "I go there (every day)." However, for past reference English uses the simple past form or either of two alternative markers: "used to" as in "we used to go there (every Thursday)", and "would" as in "back then we would go there (every Thursday)". The form [would + infinitive] is employed to talk