More flowers from summer in the Sierra Nevada mountains to lighten up your winter.
Juncos nest on the ground, which might seem dangerous: ground nests are more accessible to predators than nests in trees. However, a nest in a tree is certain to be, well, somewhere in a tree; a nest on the ground could be anywhere. The ground of a forest or meadow or even a campground is a complex surface, with lots and lots of places where a junco nest could be, only a very tiny fraction of which actually contain a junco nest.
In this series of “Find the nest” posts, I’m going to try to share with you the challenge of looking at a habitat and guessing where a junco nest might be, and the excitement of finding a well-hidden nest. Each post will have a slide show of photos, beginning with a zoomed-out image of a fairly large area, and progressively zooming in to eventually reveal the junco nest. All of the photos are from my field work and are of real wild junco nests.
Use the back and forward arrows and the pause button to navigate the slide show.
For those of you beginning to tire of winter, here is a flashback to last summer in the Sierra Nevada mountains. Flowers seem like they ought to be sensitive, but they grow on bare rock and in tiny crevices, flaunting their hardiness with their petals.
Technically, golden moles are not true moles—they are more closely related to tenrecs than they are to true moles—but golden moles are small, burrowing, insect-eating mammals that, with their streamlined heads and powerful digging claws, have converged to look a lot like true moles.
With at least one key difference: golden moles shine. They shimmer. They iridesce.
The hairs on a golden mole reflect light in such a way to give the animal a sheen, ranging in color from gold to green to purple. In the museum where I work, we have some preserved specimens of golden moles, and they are remarkable to see: their fur shines and shimmers like the coat of a child’s stuffed toy unicorn.
Whoops – I forgot to post these for a while. Here are some photos from last summer of dragonflies and spiders: charismatic, often beautiful, and highly-effective hunters that make me glad I am much bigger than they are.
You don’t have to look at many birds to realize that they are very variable in appearance: hawks look different from hummingbirds, and both look different from peacocks. You can spend a lot of time looking at birds, though, before you realize that they are hiding a lot of variation inside their mouths: long tongues, short tongues, spiky tongues, curly tongues, forked tongues, frayed tongues, brush-like tongues.
Like bird bills, bird tongues are specialized to each particular bird’s way of feeding. Birds that feed on nectar have tongues specifically adapted to nectarivory, often with many little protrusions at the tip of the tongue, giving it a frayed or brush-like appearance. This brushiness increases the surface area of the tongue, making it better at picking up nectar.