Sentence examples for have been migratory from inspiring English sources

They may therefore have had large home ranges and have been migratory.

Because it is known from several bone beds, Edmontosaurus is thought to have lived in groups, and may have been migratory as well.

Both white-faced and black-bellied whistling ducks are generally considered non-migratory resident species; therefore, these viruses may have been introduced by migratory birds wintering in Colombia.

In Europe, most swan mortalities have involved mute swans (Cygnus olor), which are not generally considered a migratory species, although whooper swans, which are migratory, also have been affected [4], [5].

The close relationship between the Indian viruses and those in the Central Asia Flyway of migratory birds suggests that the viruses in West Asia may have been introduced through migratory birds from middle Siberia.

Based on H5N8's sudden appearance in Korea and the genetic similarity of isolates from poultry and migratory birds, a governmental investigative committee has "tentatively concluded that [the virus] was likely to have been introduced by migratory birds," Kim says.

More than 200 bird species have been recorded, including migratory birds and some two dozen endemic species, such as the streamertail hummingbird, which is the national bird.

Among the major casualties have been populations of migratory fish like the salmon and steelhead, prevented by dams from returning to their river spawning grounds, and resident varieties like the trout, no longer able to thrive in rivers like the Mokelumne and the Feather, because of dams and inadequate water flow.

The US strain may have been carried by migratory birds from Latin America (8 ).

Tropic growth responses to applied external electric fields (galvanotropism) have been observed in migratory and tip-growing cells [21].

Numerous avian influenza strains have been isolated from migratory and nonmigratory waterfowl in Peru and in other South American countries [ 2].