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Marine Mammals &
Sea Turtles
Hawaiian Monk Seals
Approximately 40 endangered Hawaiian monk seals inhabit Midway Atoll and can be spotted
during most of the year. Pups may be born at any time of the year, but generally
arrive from February through June. Adult and immature monk seals are frequently seen
basking on the beaches of all three island in the atoll, but pupping occurs only on Spit
and Eastern Island. (Remember to stay at least 100 feet away from any monk seal). |
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Hawaiian Spinner Dolphins
About 200 Hawaiian Spinner Dolphins frequent the shallow lagoon waters during the day and
forage in waters outside the atoll at night. |
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Pacific Green Sea Turtles
Midway Atoll's lagoon area is an important feeding area for green sea turtles. The
are frequently spotted within the harbor area of Sand Island. Although no nesting
has occurred recently, the reduction of disturbances on Eastern Island may create new
nesting opportunities for this threatened species. |
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| Seabird &
Shorebird Calendar January
| Albatrosses: The first
black-footed albatross chicks usually hatch during mid-month, followed one to two weeks
later by Laysan albatross chicks. Parent birds spend most of their time on the nest,
but occasionally like to show off their offspring to visitors. |

Laysan Albatross with a Chick
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| Bonin petrel: Secure in their
underground burrows, Bonin petrels begin laying their eggs during January. Many
nonbreeding birds are active over the colonies at night. |
| Red-tailed tropicbird:
January is the beginning of courtship for early season nesters. Their circular
aerial flights are as impressive to visitors as they must be to potential mates. |
| Red footed boobies:
You may see a few of these birds on Sand Island, but nesting occurs only on Eastern
Island. Adults are present in January and may be building nests or laying eggs by
the end of the month. |
| Black noddy: The
nesting cycle for black noddies occurs over a long time period, so you may see them
sitting on nests or with chicks during the January. |
February
| Albatrosses: By the end of
the month, all of the black-footed and Laysan albatross chicks have hatched.
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Albatross mingle near the Clipper House
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| Bonin petrel: Nesting
continues during February, and many nonbreeding birds are visible at night. |
| Red-tailed tropicbird: Some
nesting and egg lying begins by late February, though more courtship displays are still
ongoing. |
| Great frigatebird: Courtship
and nest building may occur in February but is limited to Eastern Island.
Occasionally, frigatebirds may be seen flying over Sand Island. |
| Red footed boobies:
Nest building and egg laying continues on Eastern Island. |
| Black noddy:
Some nesting and chick-rearing continue during February. |
| Terns: Some
white terns begin laying eggs in February. Gray-backed and sooty terns begin
returning to Eastern and Spit Islands near the end of February. |
March
| Albatrosses: The chicks of
both black-footed and Laysan albatross begin to wander from their nests. |

White Terns
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| Bonin petrel: Chicks begin
hatching in March and nonbreeding activity over colonies increases. |
| Red-tailed tropicbird:
Nesting and egg lying continues. Aerial courtship displays are much more frequent as
the nesting season goes into full swing. |
| Great frigatebird: Courtship
and nest building continue, and egg laying begins on Eastern Island. Occasionally,
frigatebirds may be seen flying over Sand Island. |
| Red footed boobies:
Nest building and egg laying continues on Eastern Island, but the first chicks hatch in
March. |
| Black noddy:
Some nesting and chick-rearing continue during March. |
| Terns: The
number of adult white terns on Midway may increase slightly during March. Egg laying
continues and a few chicks may be present. More gray-backed and sooty terns return
to Eastern and Spit Islands in March. |
| Shearwaters: The
Christmas shearwaters, which nest only on Eastern Island, begin returning to the atoll in
March. A few wedge-tailed shearwaters may arrive later in the month. |
April
| Albatrosses: The chicks of
both black-footed and Laysan albatross continue growing and may wander from their nests.
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Alabtross Chick in the Nest
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| Bonin petrel: Hatching is
complete during April. |
| Red-tailed tropicbird: Some
chicks begin hatching, but eggs continue to be laid as well. |
| Great frigatebird: Egg laying
continues on Eastern Island. |
| Red footed boobies: Egg
laying continues on Eastern Island, and more chicks begin to hatch. |
| Noddies: Nesting
and chick-rearing continue in the black noddy colonies. Brown noddies begin to return to
the atoll. |
| Terns: White
tern chicks are more numerous in April, though egg-laying also continues.
Gray-backed terns begin laying eggs by mid-April, and sooty terns begin laying eggs by the
end of the month. Both nest only on Eastern and Spit Islands. |
| Shearwaters: The
Christmas shearwaters begin nesting, while adult wedge-tailed shearwaters are spending
their nights courting and begin to burrow. |
| Shorebirds:
Populations of shorebirds begin to decrease on Midway as these birds begin their migration
to their summer breeding grounds. Some of these birds have spent their entire winter
on Midway. |
May
| Albatrosses: The chicks of
both black-footed and Laysan albatross continue growing and are much better at walking.
They begin to show some adult feathers. |

Laysan and Black-footed Albatross
enjoy the view
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| Bonin petrel: Some chicks
fledge near the end of May. The presence of adults over the colonies begins to
decline. |
| Red-tailed tropicbird: Some
eggs are just being laid, while many chicks are also hatching. |
| Great frigatebird: More eggs
are laid on Eastern Island, while some chicks hatch. More frigatebirds may be seen over
Sand Island. |
| Red footed boobies:
Egg laying ends on Eastern Island, and chicks continue to hatch and grow. |
| Noddies: Nesting
and chick-rearing continue in the black noddy colonies. Brown noddies begin their egg
laying. |
| Terns: Early
season white tern chicks continue to grow, though egg-laying and hatching also continue as
the peak of their breeding season arrives. Gray-backed tern chicks begin hatching,
but egg laying may continue. More adult sooty terns return and egg laying
peaks. As many as 75,000 pairs blanket the ground on parts of Eastern Island. |
| Shearwaters: The
Christmas shearwaters continue nesting, and adult wedge-tailed shearwaters keep busy
building their burrows. |
June
| Albatrosses: Adult
black-footed albatross begin leaving the atoll, and even a few chicks may fledge.
Laysan albatross chicks are almost full grown, and many adults may leave the atoll.
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Even Common Canaries live on Midway..left behind by
Pacific Cable Company employees in 1910
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| Bonin petrel: All Bonin
petrel chicks fledge this month. |
| Red-tailed tropicbird: Some
eggs are still being laid and incubated, but most chicks have hatched and are growing.
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| Great frigatebird:
Most chicks are seen on Eastern Island. |
| Red footed boobies:
Chicks continue to hatch and grow. |
| Noddies: Most
black noddy chicks are half grown. Most brown noddies are still incubating their eggs,
while some have hatched chicks. |
| Terns: Peak
numbers of white terns are present. Chicks continue to grow, and egg-laying and
hatching are mostly completed. More gray-backed terns chicks have hatched.
Most sooty tern chicks hatch in June. |
| Shearwaters: The
Christmas shearwater chicks begin to hatch, and adult wedge-tailed shearwaters begin
laying eggs. |
July
| Albatrosses: Remaining adult
black-footed albatross and newly fledged chicks depart from Midway. More juvenile
Laysan albatrosses are fledging, and only a few adults remain on the atoll. |

Laysan Albatross hovers over the atoll
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| Bonin petrel: All Bonin
petrels have left Midway by early July. |
| Red-tailed tropicbird: Most
chicks have hatched and fledging may begin. |
| Great frigatebird: Peak
number of chicks are seen on Eastern Island. |
| Red footed boobies: Most of
the chicks have hatched and continue to grow. |
| Noddies: Most
black noddy chicks are half grown and some have fledged. Most brown noddies hatch in July,
while some are just laying eggs. |
| Terns: White
tern chicks vary from hatchlings to older chicks ready to fledge, and more gray-backed
terns are hatching and some fledging. Sooty tern chicks are growing. |
| Shearwaters: The
Christmas shearwater chicks are growing, but wedge-tailed shearwaters continue incubating
eggs. |
August
| Albatrosses: Any remaining
juvenile Laysan albatross generally have left the island by late August. |

Great Frigatebird also known as
Iwa, or the thief, in Hawaii
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| Bonin petrel: These birds are
not absent from the atoll for long, as they begin returning and renovating their nesting
burrows in August. |
| Red-tailed tropicbird: More
of the early chicks are fledging, but a few eggs may be laid in renesting attempts. |
| Great frigatebird: Peak
number of chicks are seen on Eastern Island. |
| Red footed boobies:
Chicks continue to grow. |
| Noddies: Black
noddy chicks continue to grow, and many are fledging. Brown noddy chicks may fledge
by the end of August, but many chicks have just hatched and some adults are still
incubating eggs. |
| Terns: Many
white tern chicks have fledged, and more gray-backed terns are fledging. Most sooty
tern chicks are learning to fly. |
| Shearwaters: The
Christmas shearwater chicks are still growing. Wedge-tailed shearwaters chicks begin
to hatch. |
| Shorebirds:
While large numbers of seabirds may be leaving the atoll, shorebirds - especially the
Pacific golden plovers and ruddy turnstones - begin returning to Midway from their
northern breeding gounds during August. Smaller numbers of bristle-thighed curlews
and wandering tattlers also may be spotted. |
September
| Bonin petrel: Many adults are
present courting and excavating burrows. |

Brown Boobies are also seen on Midway
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| Red-tailed tropicbird:
Fledging continues and a few older chicks remain. |
| Great frigatebird: Chicks are
still growing. |
| Red footed boobies: Most of
the chicks learn to fly. |
| Noddies: Most black noddy
chicks have fledged. Most brown noddy chicks have fledged, while some adults are
caring for young chicks. |
| Terns: Fewer gray-backed
terns are seen, and most sooty terns depart by the end of the month. Most white tern
chicks are fledging. |
| Shearwaters:
Christmas and wedge-tailed shearwater chicks continue to grow. A few Christmas
shearwaters are fledging, and more wedge-tailed shearwaters hatch. |
| Shorebirds:
Shorebirds flocks continue to arrive on Midway during September. Pacific golden
plover, ruddy turnstone, and bristle-thighed curlew populations peak for the fall season
in September. |
October
| Albatrosses: The first
black-footed and Laysan albatrosses return in the later half of the month. |

Red-tailed Tropicbird
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| Bonin petrel: Many adults are
present on the atoll. |
| Red-tailed tropicbird: The
seasons remaining young generally fledge by the end of the month. |
| Great frigatebird: Juveniles
begin to fledge in October. |
| Red footed boobies: All but
the last chicks of the season fledge. |
| Noddies: With
their long nesting season, black noddies may start nesting and laying eggs in October. |
| Shearwaters:
More Christmas shearwater chicks are fledging in October. Wedge-tailed shearwater
chicks continue to grow. |
| Shorebirds: Many
shorebirds remain on Midway over the winter, but others depart for warmer climates. |
November
| Albatrosses: Black-footed
albatrosses are busy building nests and laying eggs. Most of the Laysan albatrosses
return, though the early arrivals may begin laying eggs by late November. |

Nesting Black-footed Albatross
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| Bonin petrel: Many adults are
present on the atoll. |
| Great frigatebird: The last
of the juveniles fledge in November. |
| Noddies: Some black noddies
continue nesting and laying eggs. |
| Shearwaters: The
last Christmas shearwater chicks fledge and depart, followed by all of the wedge-tailed
shearwaters near the end of the month. |
December
| Albatrosses: Black-footed
albatrosses are incubating eggs, and most of the Laysan albatross eggs are laid during the
month. |

A Rare Short-tailed Albatross (The Golden Gooney)
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| Bonin petrel: Many adults are
present on the atoll. |
| Noddies: Black noddies
continue nesting and laying eggs, and small numbers of brown noddies are seen. |
| Terns: The number of
white terns begins to increase. |
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If you have questions about Midway or
would like to make reservations, please call us toll free at 1-888-BIG-ULUA or email us at
destpacific@sportfishhawaii.com and we will be happy to help.
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