May 2017

Posted by Ellen

These sandhill cranes have it easy; they were spotted in their Florida marsh last week, long past spring migration time, so they're not migratory snowbirds; they live in Florida year-round.

Some of their migratory cousins may winter with them in Florida, but if a sandhill crane expects to fly all the way back to summer nesting grounds in the marshy tundra of northern Canada, Alaska, and Siberia–which is the way most of these birds like to live their lives–then it's going to have to get out of Florida by the end of February, early March at the very latest. A rest stop each March for more than 600,000 migrating sandhill cranes is the Platte River near Fort Kearny, Nebraska, where skies darken with what is said to be one of the great natural spectacles on earth.

Sandhill cranes dance, and they have a call that's sort of in between a dove and a turkey.

Posted by Ellen

Across from the Rijksmuseum in Amsterdam is what we're told is a typical Dutch traffic light, with separate signals for cars and bicycles.

In central Amsterdam, more than 60 percent of all trips are by bike instead of car; in the outer part of the metro area, where road conditions and population density are more like those in the United States, bicycles still account for 40 percent of trips.

This is a new version of an old phenomenon.  Before World War II, bicycle travel was commonplace all over the Netherlands, but in the years after the war, transportation planning and road building practices were completely car-oriented, with the result that bike-riding had nearly disappeared by about 1970. Since then, however, heavy investment in bicycle infrastructure, such as protected lanes, as well as policy changes that disfavor automobiles, such as expensive parking, have brought bikes back pretty much everywhere.

In fact, the newest round of transportation infrastructure projects involve structures to handle the crush of bicycles that need parking space.