Sentences with phrase «spring migration»
"Spring migration" refers to the movement of animals, particularly birds, from their wintering grounds to their breeding grounds during the spring season. Full definition
When to drink this coffee (field oriented): All day long, doing spring migration counts or breeding bird census work, even on warm days.
coffeehabitat.com
The author accuses Stantec of choosing to do a survey only of spring migration for the birds while birds are actually at greater risk in the fall because they are moving more slowly (there is not the push to build a nest and raise this year's offspring), and because there are young birds making the trip for the first time.
The Bowhead can live deep into a second century if unmolested, it has a gorgeous seven - octave song, and is a keen listener (Cornell's Chris Clark recorded 35,000 vocalizations during spring migration in 1985, with only 19 overlaps!).
Join us for a night of costumed characters and lantern - lit trails as we celebrate the annual spring migration of salamanders and tree frogs back to the vernal pools where they were born.
Now a more recent study suggests there is also a similar trend of earlier spring migration over a much longer timescale.
Many thanks go to all who participated in this important fund raising event and to the hundreds of birders who enjoyed the pleasure of spring migration on behalf of Mass Audubon.
Thousands of grounded migrants that arrived mid-week preceding Bird - a-thon were pinned down by the inclement weather, thus giving more than 600 stalwart Bird - a-thoners an opportunity to appreciate spring migration at its best.
By analyzing some 40,000 images of the tundra landscape, Ken D. Tape of the University of Alaska and David D. Gustine of the US Geological Survey documented the northern spring migrations of both species.
Ornithologists have long wondered why some birds carry more fat than they need to fuel their migration, and a new study in The Auk: Ornithological Advances provides the answer: Leftover fuel from spring migration gives female birds a reproductive boost when they reach their breeding grounds.
Set against the Platte River's massive spring migrations — one of the greatest spectacles in nature — The Echo Maker is a gripping mystery that explores the improvised human self and the even more precarious brain that splits us from and joins us to the rest of creation.
There is an operational lighthouse at Warden Head on the southern end of the harbour.with uninterrupted views of the coast offering an ideal location for viewing dolphins and the southern right and humpback whales during their winter and spring migration periods.
Spring migrations also offer sightings of many varieties of shorebirds, who make surprise appearances on the beaches.
During spring migration several dozen gray whales enter the Salish Sea where they occasionally stop to feed in the San Juan Islands.
«For long - distance migrants climate change may advance the phenology of their breeding areas, but the timing of some species» spring migration relies on endogenous rhythms that are not affected by climate change.
Bat fatalities also occur during spring migration for some species at some facilities.
And for five years when I was there opening the mist nets every spring migration we captured the same wood thrush in the same net in the same lower position of the net.
Recording the unique calls of birds on nighttime legs of the spring migration will let researchers know where proposed wind power turbines should be placed.
Early on the morning of May 31st, near the end of the spring migration, I met up with Liz Johnson and Felicity Arengo from the American Museum of Natural History.
(The nation's first amphibian tunnel was built in Amherst, Massachusetts, in 1987 to aid the spring migration of the spotted salamander.)
Kevin Archibald and Jeff Buler of the University of Delaware and their colleagues turned the U.S.'s powerful network of weather surveillance radar stations on birds heading north across the Great Lakes during their spring migration.
Bet it's for work, and not for the spring migration.
Competing hypotheses have proposed that excess fuel carried on spring migration could go toward their reproductive effort and boost nesting success, or it could be insurance against arriving on their breeding grounds early when food is scarce.
For the Red Knot, the Delaware Bay on the East Coast is a major staging ground during spring migration; it is estimated that over 90 % of one subspecies can be present in a single day.
This is also one of the coast's best locations to watch the winter and spring migrations of Gray Whales.
The hiking trails at Ecola State Park offer more opportunities to get close to nature in a forest setting or watch for Gray Whales during their Spring migration.
Gray whales are reliably found near the Farallones during their spring migration north and the fall / winter migration south.
Join trained Oregon State Parks volunteers at Ecola State Park, one of the best vantage points for whale watching on the Oregon Coast, to look for passing Gray Whales during their spring migration.
The spring migration is north to the Bering and Chukchi seas to feed.
The annual spring migration is a potentially treacherous one this year: Help the monarchs along with these recipes for butterfly food.
«Tension at the Edge of Alaska (Dec. 4) is written solely from the viewpoint of Royal Dutch Shell which is determined to exploit the oil reserves off Alaska's coast and the Beaufort Sea (the destination of the Bowhead whales» spring migration) and the Inupiat or Eskimos, who want not only to take 60 Bowheads a year but continue to receive oil revenues now flowing at $ 200 million a year.
Slowly settling the science on climate change as a spring migration forcer?
«Our study clearly showed that European migratory bird species with declining breeding populations in Europe in the last decades (1990 — 2000) responded the least to recent climate change as reflected by the temporal trend in spring migration phenology, or even delayed their timing of spring migration, whereas species with stable or increasing populations advanced migration.»
In the supporting information (PDF) appendix the researchers show all their data, including the full list of the 100 bird species, whether the date for their spring migration has shifted (days per year from 1970 - 2000), population size has changed (1 = small change, 3 = large change) and during which time interval (either 1970 - 1990 and 1990 - 2000), what their average migration distance is (expressed in latitude change) and whether these birds winter in (southern) Europe or in Africa.
Thus, the spring migration of these species will not advance even though they need to arrive earlier on their breeding grounds to breed at the appropriate time.»
One of the most stirring spectacles of spring migration is the American Golden - Plover's northward migration through the Midwest, en route to breeding grounds along the Arctic Ocean's broad coastal plain.
This study showed that in fact many European migratory birds do indeed advance the timing of their spring migration in response to climate change [so another study in favour of climate (temperature) over circadian rhythm for migration timing] and that it may actually be the long - distance migratory birds that show better adaption: