NO! Sevin is an indiscriminate pesticide that’s considered moderately toxic to birds. Even if it doesn’t kill hummingbirds outright, it will kill their prey and deprive them of a vital food source. There are many safer and more targeted solutions available for controlling garden and household pests.
Of course they can, as long as it’s not straight out of a solar water heater.
But don’t take my word for it when you can easily prove it to yourself. Leave your hummingbird feeder in full sun for a few hours on a hot summer day, then check the temperature of the sugar water.
Unless you’ve hung your feeder near a highly reflective surface and/or inside an enclosed greenhouse-like space, the liquid won’t be much warmer than the surrounding air. This is because a relatively small small volume of liquid in an uninsulated container loses heat to the surrounding air about as fast as it gains it.
Hummingbirds are not delicate, fragile creatures. If the feeder solution isn’t hot enough to damage human skin, it’s not going to burn their tongues.
Yes. They’ve been doing it for millions of years. As long as they’ve got shelter from the sun and plenty of water for evaporative cooling, they should be fine.
Hummingbirds will drink plain water when conditions are particularly hot and dry and/or nectar is hard to come by, but the usual sources of water pose risks of disease transmission from other birds, poisoning from rain or irrigation runoff contaminated with pesticides, weed killers, oil, antifreeze, etc. It’s safer to put out a separate feeder filled with plain water or change the sugar-to-water ratio of your feeder solution.
When the daytime highs start creeping into the 90s F., I reduce the concentration of my solution to 1 part sugar to 4 parts water. When temperatures rise to over 100° F. (which they don’t very often here in the high desert), I back off to 1:5. In parts of the Southwest where temperatures are topping 110° F., a 1:6 ratio would be advisable. Weaker solutions tend to spoil faster, but on the plus side they also tend to be less attractive to bees.
Providing water for the outside of the bird is another way to help beat the heat. I added a mister to our drip irrigation system that runs for a few minutes a day, spraying into the foliage over my hummingbird garden. It’s used year round but is especially appreciated in summer, helping to keep the birds cool and their insulating plumage in top condition.
I hate to end on a down note, but the hard fact is that every organism on Earth is going to have to adapt to rising average temperatures and greater extremes, and those that aren’t well suited to withstand “the new normal” just won’t survive.
Hiebert, S.M. and W.A. Calder III. 1986. The osmoregulatory consequences of nectarivory and frugivory in hummingbirds and other species. Proc. XIX Internat. Ornith. Cong ., Ottawa, Canada.
Because hummingbirds aren’t humans, as I’ve pointed out here before, and one species’ meat is another species’ poison.
We modern humans are large, sedentary primates whose evolution hasn’t prepared us for our current unnatural abundance of calorie-dense foods, including sugars. We eat vastly more sugars than our ancestors did, and we pay the price in obesity, insulin resistance, type 2 diabetes, and other problems. *
Hummingbirds, on the other hand, are tiny, hyperactive creatures with raging metabolisms fueled in large part by naturally concentrated sugar sources (primarily flower nectar). Our smaller northern species need at minimum the caloric equivalent of ~40% of their body weight in sugar every day just to function. Even at our elevated consumption levels, it would take the average American more than six months to eat 40% of his or her body weight in sugar.
All plants manufacture sugars in their tissues, and many use them to bribe animals for pollination services. Sucrose, a naturally occurring sugar that most of us know as white table sugar, is the main sugar found in the nectars of hummingbird-pollinated flowers and so is the most natural ingredient to put in hummingbird feeders. We get our sucrose from the sap of sugar cane and sugar beets, but it’s chemically identical to the sucrose in flower nectar. (Refining sugar isn’t like refining oil; it involves filtering the contaminants out of the plant juices, including some that are dangerous to hummingbirds, and crystallizing the purified sugars.)
* I’ve also said here before that sugar doesn’t cause diabetes, based on assurances by ostensibly credible organizations, but recent research has established a very strong correlation between sugar availability and type 2 diabetes. It appears that Big Sugar took a page from Big Tobacco’s playbook and worked tirelessly for decades to keep the public from learning the facts about their product.
From the spectacular Green River Formation of Wyoming comes a tiny fossil that researchers have identified as a possible relative of both hummingbirds and swifts.
When Eocypselus rowei, whose genus name is Greek for “dawn swift,” died approximately 50 million years ago, it fell into shallow, oxygen-poor water and was covered with fine layers of mud that preserved minute details of its body and plumage. Except for its long wings, the fossil shows few hummingbird-like characteristics. Its stubby bill is more like those of swifts and suggests that, like them, it fed on flying insects. Though about the length of a Magnificent Hummingbird (12 cm, 4 3/4″), its short bill, proportionally larger skull, and longer wing and leg bones would have made it heavier. “Shadows” in the stone surrounding its bones are fossilized pigment structures that would likely have given it a glossy, possibly iridescent black color like many modern swifts.
Though hummingbird fossils have been found so far only in Europe, Eocypselus shows that possible distant hummingbird ancestors did occur in the Americas.
Read the full text of the article here:
Read more at:
I recently appeared on the public television news magazine Arizona Illustrated to talk about hummingbirds and the Southeastern Arizona Bird Observatory‘s field studies on them. Watch the interview here:
LEAVE THEM ALONE.
Hummingbird nests are made with extremely strong, extremely stretchy spider silk, and the nest will expand as the nestlings grow. By the time they seem to be “outgrowing” the nest, they’re almost ready to leave it permanently.
By second-guessing the mother hummingbird and Mother Nature, you risk injuring or killing the youngsters in addition to violating federal and state laws that protect wild birds.
Unless a wild animal is in obvious distress or danger, it is best not to intervene without consulting a wildlife rehabilitator or other wildlife expert.
See also: “Rescuing” baby hummingbirds
I’ve been busy this fall, but more with art than birds.
Mountain-Gem Arts now has a permanent URL—www.mountain-gem-arts.com—and new stuff! I’m most excited about the new Gila Monster series (right), inspired by a request from a friend in New Mexico, but there are new additions to the Heart of the Woods and Rainbow Ripples lines plus new nature-theme earrings: Ornithophily, Kelp Forest, Autumn Leaves, Blue Lagoon. You can also browse a gallery of recent work.
I’ll be exhibiting at the Cascabel Community Fair next weekend, so at least some of the items available now on the Web site will have new homes by Sunday. If you see something you love, better grab it before someone else does.
There’s be more to come soon. If you’re looking for a gift and can’t decide, e-mail me about a gift certificate.
Future additions will include reproductions of some of my 2-D art and links where you can purchase my e-books (in progress).
Thanks for supporting small businesses and independent creators!
There’s been a recent flurry of bad news about free-roaming cats, which is timely considering a recent visit to the comments section of one LB&E post by an incipient cat hoarder. His last comment was so out of touch with reality that I did him a favor by declining to publish it. That’s tragically typical of the breed, but I hold a polyanna-ish confidence in the power of facts to overcome the disinformation thrown around by obsessive cat defenders (OCDs).
Thought the “Black Death” was history? Think again. These days, plague is usually contracted from the bites of fleas in and around rodent colonies, but cats and dogs that eat infected rodents can contract and transmit the disease and/or bring home infected fleas to their human families. (Warning: The article is headed by a grisly photo of the original victim’s blackened hand.)
A kitten adopted from a TNR program tests positive for rabies:
The kitten was friendly and domesticated, according to the family that adopted it. Because of its demeanor, police aren’t sure that the kitten was part of the feral colony – there is a chance it was abandoned in the park. [emphasis mine]
One big reason that TNR is such a failure at reducing, much less eliminating, feral cat colonies is that the conspicuous presence of “managed” colonies in public places tends to attract people looking for places to dump unwanted pets. Inadequate commitment to vaccinating all cats in a colony at recommended intervals to prevent outbreaks of rabies, feline immunodeficiency virus, feline leukemia virus, etc. makes it a public health failure, too.
This press release from the American Bird Conservancy reports on an important new paper published in the journal Zoonoses and Public Health: “Zoonotic Diseases Associated with Free-Roaming Cats,” by R.W. Gerhold and D.A. Jessup (2012). The study reviewed the various diseases that infect free-roaming cats and the implications for public health of trying to manage feral cat populations via TNR. Three significant findings related to the second story above:
- Free-roaming cats are disproportionately responsible for exposing humans to rabies.
- Cat colonies “managed” by TNR attract unneutered, unvaccinated cats and increase their survivorship and reproductive success, leading to increases in colony size and potential for disease transmission.
- Feeding stations for feral cats attract wildlife such as raccoons, skunks, and foxes that may transmit rabies and other diseases to the cats and/or carry feline diseases into the wild. (Wild predators that prey on free-roaming cats are also vulnerable to their diseases and parasites; strains of feline leukemia virus that have killed critically endangered Florida Panthers have been linked to domestic cats.)
An even more insidious public health menace related to free-roaming cats is toxoplasmosis. The organism that causes this disease can infect many animals, but cats are the only ones that pass the parasite’s infective oocysts in their feces. A cat may only shed oocysts for a couple of weeks early in the infection, but they can persist in contaminated soil—garden beds, children’s sand boxes—for years. Authors Gerhold and Jessup cited a 2011 study that found that 63 percent of the patients with acute toxoplasmosis had become infected through contact with cat feces.
One more cat item that relates to the “kitty-cam” study in Georgia:
The authors conducted a survey of opinions about feral cats and their management with cat colony caretakers (CCCs) and bird conservation professionals (BCPs) across the United States. Naturally, they found strong polarization between the two groups (even though substantial portions of both described themselves as both cat- and bird-people), and they also documented how poorly informed/in denial CCCs were about the impacts of free-roaming cats on wildlife and public health. Even among the BCPs, awareness of feral cat issues was lower among respondents who lacked college degrees, so there’s a need for outreach and education even within the bird conservation community.
The authors suggest:
To the extent the beliefs held by CCCs are rooted in lack of knowledge and mistrust, rather than denial of directly observable phenomenon, the conservation community can manage these conflicts more productively by bringing CCCs into the process of defining data collection methods, defining study/management locations, and identifying common goals related to caring for animals… Our findings suggest that when such collaborative measures are not logistically possible, CCCs may be more likely to accept scientific results framed in terms of directly observable phenomenon (e.g., feral cats kill wild animals) rather than indirectly observable phenomenon (e.g., feral cats contribute to global declines among songbird populations). For instance, most CCCs see direct evidence of cats killing wild animals and would find denying those experiences difficult without creating some degree of cognitive dissonance.
In discussion of the Georgia “kitty-cam” study, OCDs glommed onto the low number of documented kills by the pets in the study, even though a conservative extrapolation of the results suggests that free-roaming cats kill more than 2 billion animals per year. It seems obvious that feral cats, even those that are being fed, will hunt more than well-fed, part-time outdoor pets, but seeing might be believing. It’s time to put “kitty-cams” on feral cats in managed colonies so that CCCs and OCDs can see the carnage up close and personal.
I get a lot of mail this time of year asking for help with hummingbird identification. Those that are accompanied by photos are usually pretty easy to deal with, but ones like this give me a bad, bad feeling:
I live in Michigan. My daughter had a friend that lived along the Maple river. They saw yellow, red and green hummingbirds. These were brightly colored. She discribed the yellow one as looking like a goldfinch. They all appeared to be the same type of birds only different bright colors.
My sister just this week saw one that was a solid bright sky blue.
I’ve never heard of hummingbirds that have this coloring.
That’s because there aren’t any. A red and green hummingbird in Michigan is almost certainly a male Ruby-throated, but there are no yellow or solid sky blue hummingbirds among the world’s 340-odd species. None. Anywhere. However, those bright colors are found in many tiny songbirds, including warblers, buntings, and yes, finches. I shared this information, suggesting a couple of field guides and Web sites, and received this reply:
You answered my question as far as these being known. They were definitely hummingbirds. they were to small for anything else and the yellow, red and green variety were eating from the feeder. my daughters friend had hit one on the yellow ones with his car and killed it. Do you have any suggestions on how to attract them so I can get a picture
Oh, they were small? and eating from a feeder? and one was dead? Well, that’s certainly compelling evidence for not one but two previously unknown hummingbird species in the unexplored wilds of Michigan. Can’t wait to see those pictures.