The saxaul sparrow's relations within the genus Passer are unclear, although with its black throat feathering it has usually been considered part of the "Palaearctic black-bibbed sparrow" group related to the house sparrow.
Now in its 23rd season "The Simpsons" has a reputation for irreverence, but when its episodes have been pulled from broadcast it has usually been for reasons of sensitivity: for example, jokes about nuclear meltdown were taken out of episodes shown in Germany, Austria and Switzerland after the disaster in Japan last year.
"It has usually been the Senate".
However, it has usually been a mistake to underestimate her.
But not philanthropy the way it has usually been done.
Fighting has continued through the winter, but it has usually been at NATO's initiative.
Anti-Americanism has always been around, but until recently it has usually been embraced by a minority only.
When he has attracted attention it has usually been because of his blunt language or a flip remark.
BESIDES a shared taste for funny names and fancy fees, it has usually been easy to distinguish hedge funds from private-equity firms.
One is that telcos have often flirted with the content business in the past, and it has usually been a disaster.
Over the years, when the oil market has overheated, it has usually been Saudi Arabia the kingpin of OPEC that has come to the rescue.
