Have you ever seen birds with legs as thin as chopstcks hanging around and poking at the sand near beaches? Or, have you seen one silently perching or gliding around the water? Or maybe you've seen huge gatherings of birds all resting or wading in the line between sand and ocean by the shore?
If you've seen amazing sights of birds gathering right now in Alameda, you might be witnessing bird migration and shorebird season in the in the San Francisco Bay.
Every year, thousand of birds take a pit stops, vacations, and full-on nesting breaks right on our shoreline. So, you might be wondering...why here? Why in Alameda and what could they possibly be up to? Let's follow these winged friends and find out!
Our own San Francisco Bay is part of what we call the Pacific Flyway! This Flyway is a kind of invisible highway in the sky that birds use to migrate from the Alaska to Patagonia. It is one of four routes birds can take when migrating North America. Every year, millions of birds make long, tiring journeys all the way from Alaska to South America to find food, better weather, and places to raise their chicks. Some birds travel all of the distance, or only some.
As they travel, California is a perfect place to stop by. If you think of the Pacific Flyway as a long road trip, then Alameda would be a snack, rest, or nap stop for migrating birds in need of a quiet and safe place to land, eat, and recharge! Our mudflats, beaches, and eelgrass beds, as described in previous posts, are full yummy creatures and hiding spots for these birds to enjoy. This migration is the reason why we can see many birds flocking our shores.
Some species of birds stay in stops for the entire season, but most birds stay only for a few days before continuing on their journey.
There are two main bird migration season in the San Francisco Bay. The spring migration is when birds travel Northbound which happens from March to May. The fall migration is when birds travel Southbound which happens from August to November. Here are just a few amazing birds you might spot near Crown Beach, Crab Cove, or the nearby wetlands!:
California Least Tern
Look for...
tiny, (less than 10 inches) quick tern
black cap and white forehead
black wingtips, and white underbody
black-tipped yellow bill
a short, forked tail
buoyant, fluttery flight
Habitat:
These terns like nesting on open gravel/sand and they usually feeds over calm Bay water. They can be seen feeding and scavenging for small, slender fish.
Where: Summer only (Apr–Aug). You can view them from outside the fenced Alameda Point nesting colony and at the adjacent Seaplane Lagoon/ferry. They can be seen along the Pacific cost all the way from San Pablo Bay to San Jose del Cabo.
Double-crested Cormorants
Look for...
dark and long-necked geese-like waterbirds
thin hook-tipped bills
orange striking skin near their beak
a white crest along eyes
low, floating flight
Habitat:
These birds are most commonly seen in freshwater, the coast, and inland lakes.
Where: All year round. Roosting and fishing around Seaplane Lagoon, near South Shore, and near Bay Farm/Harbor Bay ferry channel. They can be seen perching near islands and high regions.
Brown Pelican
Look for...
huge birds with thin necks and extremely long, tucked bills
wide orange throat pouches
broad and long wingspan
bowed gliding pattern
grey-brown birds with pale yellow head and white necks
dark brown neck (breeding)
chestnut/white head (non-breeding)
Habitat:
These pelicans can be seen in the open Bay and harbor edges. They are rarely seen inland (unless you're in Salton Sea!).
Where: Peak in fall or summer. Often in the Ballena Bay and Encinal breakwaters. You can also see many of them in Seaplane Lagoon. I've personally seen many of them plunge-diving during lunch time at the green bridge connecting Bay Farm and the main Alameda island.
Red-shouldered Hawk
Look for...
rufous chest/belly
heavily black-and-white banded tail
loud “kee-yah” call
brown and cream underbelly
Habitat:
These hawks can be seen in woody or leafy neighborhoods and parks near water.
Where: Year-round. You can spot them in tall trees at Washington Park, Lincoln Park, Krusi Park, Crab Cove, and other shoreline parks. They can also be seen along greenbelts in Bay Farm and other quiet tree-lined areas like Jean Sweeney Park and Corica Park's golf course edges.
Nuttall’s Woodpecker
Look for...
small black-and-white woodpeckers
“ladder-backed” bird
males have a small red nape spot, and females have a black nape spot instead
Habitat:
These woodpeckers usually nest around oaks and mature ornamental trees.
Where: You can hear them before you see them! Listen for dry tapping sounds in Washington, Lincoln, Krusi, and Jean Sweeney Parks. Especially look out for older tree-lined streets where oaks and sycamores are planted!
Black Phoebe
Look for...
small sooty black flycatcher with a clean white belly
tail-wags (in an up and down motion) from low perches
a shrill chirping call
Habitat:
These flycatchers can be found most often near water: ponds, lagoons, and shorelines. They can also be found down low to the ground in branches or rocks.
Where: You can find Black Phoebes around the South Shore lagoons, Crab Cove/Crown Beach, and Seaplane Lagoon. They can also be found near the edges of storm-water ponds at Alameda Point, and Bay Farm lagoons.
Snowy Egrets
Look for...
slim white heron with long pointed black bill
bright yellow (adult) or dull green feet
a patch of yellow along their eye to their bill
active, dancy feeding style
Habitat:
You can find these herons along tidal flats, marsh edges, and shallow lagoons or bodies of water.
Where: These herons can be found in Crab Cove, Crown Memorial Beach, Elsie Roemer Bird Sanctuary, Bay Farm shoreline/lagoon edges, and Ballena Bay mudflats during low tide. I've also seen one perched along the residential areas connected to the water in Bay Farm!
Ruby-crowned kinglets
Look for...
tiny olive colored songbird
quick constantly flicking white banded wings
males show a hidden ruby crown when excitedly singing in spring or summer
Habitat:
This kinglet likes flitting through shrubs and trees. They can be seen mainly during the fall-spring or winter Alameda.
Where: You can see them in trees and roadside shrubberies in the Washington, Lincoln, Krusi, Chochenyo, and Jean Sweeney parks. You can also see them in Bay Farm greenbelts, and leafy residential yards.
Why can we see so many diverse birds in Alameda?
Birds migrating love our bay because we have a lot of mudlflats, and mudflats are great sources of endless snacks. These birds, with their long beaks, dig for worms, mudshrimp, and clams in the squishy mud. As mentioned in the short list above, shorebirds have beaks specialized for the specific type of food they eat! Our eelgrass beds are also great sources of food. These beds are home to so many different types of fish, and many of the birds migrating find them to be great sources of breakfast, lunch, and dinner!
Unfortunately, rising climate temperatures which lead to shifting weather patterns can affect migrating birds' ability to find food and places to reproduce during their flight in the Pacific Flyway. If these birds cannot find good resting spots in California and the bay, they can go extinct in our region. Because of this, it is very important to make our bay as habitable, safe, and clean as possible.
To protect migrating birds, we can take many measures. Here are some basic tips to make our bay safer for birds flying over California:
Turn off decorative or non-essential lights during the late evening and nighttime.
Keep pets that hunt birds, such as cats, indoors.
Make sure windows visible by installing break up reflections or installing screens.
Plant native plants to help birds find hiding spots and nesting areas (and remember to avoid usage of pesticides!).
Recycle, pick up, and reduce use of plastics.
To find out more about ways we can help protect migrating birds or learn about what birds may be endanger, check out these two sites:
https://abcbirds.org/news/thirteen-tips-to-make-the-journey-safer-for-migrating-birds/
https://www.audubon.org/climate/survivalbydegrees/flyway/pacific
Sources used:
https://alamedapost.com/features/alameda-life/ten-amazing-alameda-birds/
https://pacificflywaycenter.org
Multiple pages from the Gate Bird Alliance, the Ohlone Audubon Society, and the All About Birds website.