Both parents will lead the young birds to food and care for them for 14 – 16 days until their first flight.

Both the US and Israeli strains are marked by high mortality rates in infected avian populations ; the presence of dead birds — especially Corvidae — can be an early indicator of the arrival of the virus.

( Both bats and birds have retained the thumb for specialized functions.

Both of these birds nest in the Edwards Plateau, the Warbler exclusively.

Both birds incubate and guard the young.

Both birds and reptiles are kept there, and the facility's success in breeding rock iguanas in captivity was reported in the press.

Both condors are very large broad-winged soaring birds, the Andean Condor being 5 cm shorter ( beak to tail ) on average than the northern species, but larger in wingspan.

Both Old World and New World vultures are scavenging birds, feeding mostly from carcasses of dead animals.

D ' Arrigo noted that the flight of a non-motorised hang-glider is very similar to the flight patterns of migratory birds: Both use updrafts of hot air ( thermal currents ) to gain altitude that then permits soaring flight over distance.

Both birds help to incubate.

Both birds build the nest on a main fork or a limb high in a tree, 12-20m high made of dead twigs and lined with grass or other vegetation and sheep ’ s wool.

Both parents feed the nestlings for a period of 28 – 30 days, until the young birds fledge.

Both feed the young, often leaving them alone for long times ; this unusual habit for wading birds may be made possible by the thick nest walls.

Both birds build the nest on floating platform, after clearing out an area of approximately across.

Both male and female white-striped birds are more aggressive than tan-striped birds during the breeding season.

Both reserves are important for Tern species and a number of wading birds and waterfowl.

Both the breeding and winter habitat of these birds has been degraded by clearance and pollution.

Both of its engines ingest birds and lose thrust as the aircraft returns to the airport, and the plane catches fire during a belly landing.

Both parents look after the young and may perform distraction displays to lure predators away from the nest or young birds.

Apostlebird s. Both species in this family are highly social and live in groups of as many as 20 birds.

Both parents incubate ; the female leaves before the young birds fledge and sometimes before the eggs hatch.

Both parents look after the young birds, who find their own food and are able to fly within a month of hatching.

Both species are short-billed brown birds with a preference for grassland rather the wetland habitats typical of rails.

Both columnist Liz Smith and film critic Rex Reed have mounted vigorous campaigns to gather support for an honorary Academy Award for Day to herald her film career and her status as the top female box-office star of all time.

In " The Best of Both Worlds ," 40 Starfleet starships gather near Wolf 359 to intercept a Borg cube ship traveling to Earth.

Both sexes gather nesting material and build the nest, but the division of labour isn't always exactly equal.

Both lurkers and posters frequently enter communities to find answers and to gather general information.

Both the Times and the New York Tribune began using the screen for news bulletins, and on election nights tens of thousands of people would gather in Madison Square, waiting for the latest results.

Both sexes gather and forage.

Both men became the subject of a Federal Drug Enforcement Administration investigation ; their homes were searched and research was seized to gather evidence towards charging both men with violating federal drug laws.

Both the Times and the New York Tribune began using the screen for news bulletins, and on election nights crowds of tens of thousands of people would gather in Madison Square, waiting for the latest results.

Both races are fairly different in culture, society and technology, but with some overlap: both depend on flint for their tools ; both recognize the importance of fire and use it ; both hunt and gather.

Both in Rio and in São Paulo the event is transmitted by television, lasting approximately half an hour ; television cameras in real time are used to broadcast the movement of blocks within the main school, the title favorite, where members and fans that Sambódromo were not to gather to watch the event from there.

Both generations of chavurot gather annually at the National Havurah Committee's Summer Institute and at its regional retreats.

Both males are females will incubate, with the male often incubating at night and, during the day, defending the nest territory during the day while the female incubates.

Both parents will incubate a brood for 23 – 24 days, and the precocial young leave the nest shortly after hatching.

Both Great and Lesser Frigatebirds used to nest on the island but have subsequently become extinct as breeders, though they continue to use the island for roosting.

Both parents share the care of the nest.

Both of these were common, but have suffered from loss of habitat, from competition for nest sites with introduced House Sparrows ( Passer domesticus ), and nest-predation by European Starlings ( Sturnus vulgaris ) and Great Kiskadees ( Pitangus sulphuratus )-this last species was deliberately introduced as late as 1957, with the intent that it would control the previously introduced anoles.

Both the Mountain Bluebird and the Western Bluebird nest in Bickleton.

Both parents build the nest, sit on the egg or eggs, and feed the young.

Both members of the pair help to build the nest, incubate the eggs ( generally two per clutch ) and feed the hatched young.

Both sexes build the nest, which is a shallow scrape ( or occasionally a platform of mud and vegetation ) lined with vegetation and sometimes a few feathers, and placed within a half-metre ( 18 in ) of the edge of a small pond.

Both parents feed the young at the nest by regurgitating food.

Both the male and female take part in nest building, incubation and care of chicks.

Both parents take part in nest building and feeding but it is suggested that only the female incubates.

Both species nest in burrows on off-shore islands and the name was applied to the meat of either and was formally applied to F. arctica by Pennant in 1768.

Both the male and female visit the nest site for almost half a year before egg laying takes place.

Both the nest and platform are made of aquatic vegetation.

Both parents build the nest and feed the young.

Both sexes build the nest and rear the young, though only the female broods them.

Both the male and female take part in nest building.

Both sexes cooperate in building a nest in the earth, but only the male incubates the eggs and tends the young.