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2 HEALTH AND LABORATORY MAGAZINE

HUMMINGBIRDS MAY
No: 10 June 2022
ISSN: 2148-953X
STRUGGLE TO EVADE
CHAIRMAN CLIMATE CHANGE
Süleyman GÜLER
EDITOR
Berat DURMAZ

GRAPHIC DESIGNER New research shows that
Berat DURMAZ
hummingbirds would struggle to cope
ADVISORY BOARD if climate changes drives them to
Professor Dr. Kadir HALKMAN
Professor Dr. Aziz EKŞİ much higher elevations.
Melek MALKOÇ
Exp. Yelda ZENCİR
Özlem Etiz SAĞDAŞ
Nevin KOÇAKER
Any animal ascending a that height – in addition to (3800m/12,500 feet) where they use torpor when its
LEGAL ADVISORS mountain experiences a becoming torpid for most the air is thinner (39% less super-cold, which is cool,”
Hunting. Ersan BARKIN double whammy of diffi- of the night to conserve oxygen) and colder (5°C),
Hunting. Murat TEZCAN says Spence. And when
culties: the air gets thinner energy – making it unlikely and after 4 days at the the team checked the size
FINANCIAL CONSULTANT while it also becomes that they can relocate to new altitude, Spence and of the animals’ lungs, to
İrfan BOZYİĞİT colder, which is particularly higher altitudes. LeWinter remeasured the
SMMM find out whether the birds
problematic for creatures birds’ metabolic rates as that originated from higher
HEAD OFFICE striving to keep warm when To find out how the agile they hovered and how
Oğuzlar Mah. 1374 Sok. No:2/4 less oxygen is available. aeronauts fared at high often and deeply the birds altitudes had larger lungs
Balgat - Ankara TURKEY For tiny animals with the altitudes, Spence first lured went into torpor as they to compensate for their
Tel: +90 312 342 22 45 highest-octane lives, such the animals into net traps, slumbered. meager oxygen supply,
Fax: +90312 342 22 46
bilgi@labmedya.com as hovering hummingbirds, from sites 10m (33 feet) they did not. But the birds
the challenges of migrating above sea level (Sacra- Even though the hovering did have larger hearts to
to higher levels to evade mento, CA) up to 2,400m hummingbirds should have circulate oxygen around
climate change may be (7,900 feet) (Mammoth been working harder to the body.
too much, but no one knew Lakes, CA). Then he and remain aloft in the thin air
whether these incredible Hannah LeWinter (Hum- 1000m above their natural What does this mean for
aviators may have more boldt State University, USA) range, the birds actually
gas in the tank to keep transported them to an experienced a 37% drop in the hummingbird’s future
www.prosigma.net them flying at higher alti- aviary in western Califor- their metabolic rate. And as climate change forces
info@prosigma.net tudes. nia at 1,215m (4,000 feet). when the team compared them to find more com-
Once the birds had spent a the energy used by birds fortable conditions? “Our
As Anna’s hummingbirds few days in their new home, that originated close to results suggest lower oxy-
(Calypte anna) are com- the scientists set up a tiny sea level and from the gen availability and low air
DATE OF ISSUE fortable up to elevations funnel into which the birds higher end of their range, pressure may be difficult
February 2022 - Ankara
of 2,800 m (9200 feet), could insert their heads as they all struggled equal- challenges to overcome
NOTE TO THE READER Austin Spence from the they hovered while sipping ly on the mountain top. for hummingbirds,” says
Published in the Labmedya University of Connecticut, tasty syrup, and measured “Overall, these results Spence, meaning that the
Newspaper featured USA, and Morgan Tingley the birds’ O2 consumption suggest low air pressure
in articles and articles from the University of (metabolic rate). and oxygen availability birds will likely have to shift
Responsibility of opinions north in search of cooler
Broadcast LabMedya not to California, Los Angeles, may reduce hovering per-
its body and / or Prosigma USA, were curious to find Spence and LeWinter also formance in hummingbirds climes.
Company, belongs to the out how hummingbirds measured the humming- when exposed to the acute
authors. Authors may have that originated from close bird’s CO2 production challenge of high-elevation Reference: “Anna’s hum-
consultancy or other business
relationships with companies to sea level and those that (another measure of conditions,” says Spence. mingbird (Calypte anna)
involved in their work. Ads live at the loftier end of the metabolic rate) overnight, physiological response to
also; is the responsibility of range would cope when as the tiny creatures al- In addition to struggling to novel thermal and hypoxic
advertisers. The product transported well above lowed their metabolism to hover, the birds resorted to
information published on the conditions at high eleva-
product introduction pages their natural habitat to an tumble when they became dropping their metabolic tions” by Austin R. Spence,
are the presentations of the altitude of 3,800m (12,500 torpid – a form of mini rate and became torpid
relevant companies and the feet). They published their hibernation – to conserve for lengthier periods at Hannah LeWinter and
manufacturer Responsibility. Morgan W. Tingley, 26 May
discovery in the Journal of energy while they slept. night, spending more than
In addition to the Labmedya Experimental Biology that Then, the duo relocat- 87.5% of the chilly high-al- 2022, Journal of Experi-
the birds struggle to hover ed the birds to a nearby titude night in torpor. “It mental Biology.
and suffer a 37% drop in research station near the means that even if they’re
WHAT IS LABMEDYA ?
www.labmedya.com their metabolic rate at peak of Mount Barcroft, CA from a warm or cool spot, DOI: 10.1242/jeb.243294