Glucose screening and tolerance tests during pregnancy. A glucose screening test is a routine test during pregnancy that checks a pregnant womanâs blood glucose (sugar) level. A glucose tolerance test is done if a glucose screening test result is higher than normal. It is used to diagnose gestational diabetes. Gestational diabetes is high blood sugar (diabetes) that starts or is found during pregnancy.
The Arctic tern is known to make the longest annual migration in the animal kingdom. During its breeding season, it is found far to the north where summer days are long, and it winters far south in the southern hemisphere, where the days are longest during November to February.he Arctic tern is notorious for its long-distance migration between the breeding grounds and the winter quarters in the Southern Ocean. This knowledge has been obtained by ringing and observations of movements at-sea.
The common tern is the most widespread and abundant tern in New York. This species has a light grey back, white underparts, a white, deeply forked tail, and a glossy black cap and nape.Its pointed wingtips are noticeably darker than those of the roseate tern with which it associates.ne brood per season is typical, but re-nesting is common when the first nest is destroyed. By mid-October, the terns depart for wintering grounds, sometimes flying as fast as 40 mph. The common tern secures its prey in a fashion similar to other terns, striking the water in shallow dives or skimming the surface.