Q: I collect rainwater to use on my garden and I’ve found Pacific chorus frogs in the black garbage can that collects the rainwater, but I’ve never seen eggs or tadpoles in there. I wonder why not; would they be too small to see? [Marian, San Jose]
Is there a way to tell the difference between male vs female lizards? How do they attract their mates? –Saundra, Concord One way, Saundra, is to wait until spring and watch them mate: The male is on top. But I … Read more
Barnacles are hermaphroditic – they contain both male and female sex organs. You’re thinking, “Well, they always have a date on Saturday night.” No, it’s a really bad idea to self-fertilize: Inbreeding results in little genetic diversity. Worms, slugs, snails – slow-moving animals with low rates of encounter – are all hermaphroditic. And you could not get any slower than an adult barnacle!
Should we worry about asbestos in serpentine rock? Yes, a bit. In California, we have North America’s largest exposures. It’s even our official state rock.
Q: What’s the largest underground-dwelling invertebrate in the Bay Area? How does it live?
Learn a few secrets of efficiency from the majestic pelican.
Q: When I see bees and hummingbirds feasting on even tiny flowers, I wonder if each flower replenishes the nectar supply, or is it a one-time offering?
Can bees see colors that people can’t? What about birds? How do scientists figure out what can be seen by other animals, especially small animals like insects?
The biggest shark in the Bay is the seven-gill–with two more gill slits than the average shark. Why the extras? Well, turns out they’re probably an evolutionary accident, but these are still fascinating animals–up to 10 feet long, and swimming right out there in the Bay!
Bay Nature reader Rich saw a number of dead barn owls along I-5. What’s going on? Turns out barn owls may be the most widespread birds in the world — and they may be the original ghosts!