color drawings and descriptions of common Yosemite birds: http://www.nps.gov/yose/naturescience/birds-common.htm
Yosemite video of birdsongs
http://www.nps.gov/yose/learn/nature/birding-tips.htm has birding advice and ethics, including that you should not divulge locations of special status birds such as American Peregrine Falcons and a dozen others.
Cornell University birding page
How to ID Birds Learn some of the secrets of bird identification using silhouettes, posture, flight pattern, size and habitat, in addition to key field marks.
Where to Bird, Bird Guide, Gear Guide, Attracting Birds, Conservation Links
Yosemite nature podcasts: http://www.nps.gov/yose/photosmultimedia/ynn.htm
episode #1 is wildflowers
color drawings of common Yosemite wildflowers: http://www.nps.gov/yose/learn/nature/common-wildflowers.htm
photos of 38 Hetch Hetchy Wildflowers, blooming along the 2.5-mile trail to Wapama Falls in early June 2013.
where to see Yosemite wildflowers
At a Yosemite Assn page, FAQs from the Park Service, including:
When are the wildflowers best?
.”Wildflowers vary according to location, time of year and the preceding winter and spring weather. The best wildflower displays are:
• Mid-March into April in the foothills outside the park: In the best years there are carpets of California poppies, baby blue eyes, western redbud, etc. Highway 140 through the Merced River Canyon can have a spectacular display.
• Mid-June into August in Yosemite’s higher elevations: The meadows at Crane Flat and along the Glacier Point and Tioga Roads present beautiful wildflower displays most years.
Yosemite Valley never really gets a “carpeted” display of wildflowers. Perhaps the heavy grazing pressure and soil compaction the Valley meadows received many decades ago has caused this. However, the dogwood tree blossoms in early May are usually a nice display as are the bushy western azalea of late May into mid-June. All summer there are little pockets of flowers scattered about Yosemite Valley.”
Merced River Canyon
“The most diverse mix of wildflowers is actually just outside the park’s Western boundary on the trail above the South Fork of the Merced River that extends from historic Savage’s Trading Post to Hite’s Cove. Over fifty species of flowers may be found between March and May along this picturesque path.”
From the Yosemite Daily Report of October 30, 2017
“ Fall Color Advisory
All spring and summer leaves have been using pigments (chlorophylls, xanthophyll, and carotenoids) to make food from air, water, and sunlight. As temperatures cool and days get shorter, leaves on deciduous trees stop producing chlorophylls and the familiar green color fades away to reveal the other pigments which have been masked all season. Quaking aspen and big-leaf maple display the yellow carotenoids. Continued sunny days and cool nights trap sugars in leaves and some leaves will form the red pigment anthocyanin, coloring trees like dogwoods or the non-native sugar maple across from the Chapel, or vines like the poison-oak along the El Portal Road a brilliant orange, pink, or even purple. The best autumn colors occur under clear, dry, and cool but not freezing weather. The degree of color may vary from tree to tree and even leaf to leaf. Leaves directly exposed to the sun may turn red, while shaded leaves may be yellow. Leaves on some trees like white alders or California buckeyes (which are “summer deciduous” as a drought adaptation) just wither and turn brown. Leaves on marsescent trees, like some California black oaks, will linger all winter and only fall next spring when new leaves emerge. Live oaks, tanoaks, bay laurel and the conifers will keep their newest leaves throughout the winter to get a head start on food production next spring. (Adapted from Why Leaves Change Color, USDA FS-12 and Physiology of Woody Plants, Kramer and Kozlowski, by Brian Mattos) (K. Shive)”
The Geologic Story of Yosemite National Park by N. King Huber, 1987, U.S. Geological Survey Bulletin.
Download full color geologic maps of Yosemite Valley at:
To calculate sunset, sunrise, moonrise for trips go to http://www.usno.navy.mil/USNO/astronomical-applications/data-services/rs-one-day-us/
The Yosemite Assn used to have a page of photo tips from photographer Michael Frye which included:
In the May 2, 2003 notes he says “Nice late-afternoon sunlight strikes Bridalveil Fall about an hour-and-a-half before sunset (about 6:30 p.m.) in May and June. …The best light on Upper Yosemite Fall occurs around 10 a.m. and about 3 to 4 p.m.”
In the June 20 notes he says that the best light for photos of Vernal Fall is from 5 to 6 p.m. and the best time for Nevada Fall is 6:30 to 7 p.m.
Other notes tell us that the dogwood peak bloom should be early to mid May and the redbud in mid March. He has notes about Horsetail Fall in a February section. Best fall color varies from year to year from mid October to mid November.
November, December, and January are the best months to photograph Half Dome and El Capitan. From late afternoon until sunset, low-angle sunlight highlights the texture on the face of Half Dome. Late in the day, El Capitan is also flushed with warm light. (At the website he gives specific locations to photograph from).
Ten tips for photographing Yosemite lunar rainbows
Predictions of when the best Yosemite lunar rainbows will be are at: http://uweb.txstate.edu/~do01/
The author recommends taking upper Yosemite Fall shots from the parking lot just north of Sentinal Bridge, shuttle bus stop 11 Yosemite Valley free shuttle bus
Intellicast.com map of current (within an hour or so) lightning strikes in the U.S. is at:
The Mountains of California by John Muir can be read at:
Can I recommend these chapters?
VII THE GLACIER MEADOWS
XII SIERRA THUNDER-STORMS
XIII THE WATER-OUZEL
Cow Parsnip, Coneflower, Pussypaws, Penstemon, Phlox, Columbine, Monkeyflower, Sulphur Flower, Iris, Groundsel and Lupine Tuolumne trip wildflowers
Yosemite rock fallsin Yosemite 2008 to the most recent report and safety tips for hikers
Bears Bears has how bears break into cars in Yosemite National Park and how to prevent it happening to you (with lots of photos of actual bears climbing in to cars), what to do if you see a bear, how to store food away from bears and more.
The same shot of Yosemite Falls in three pictures: a flooded Sentinel Meadow taken May 16, June, 2005 and a snow covered February 4, 2008. Yosemite Falls View in Three Seasons
Thunderstorm and lightning safety includes the answer to the question: Why can’t you swim during a lightning storm? A strike on a lake doesn’t kill all the fish in the lake. AND What is it like when lightning strikes?
Yosemite Valley free shuttle bushas the route, stops and how to find the store, shower house, trailheads and hints for saving time using the free bus by better understanding the route, as well as basic info about fee buses in Yosemite
Park Service historical photos are at:
click on NPS photos