The Joys of Providing Wildlife Habitat

This morning some traveling friends stopped in for breakfast. Three migrating black-headed grosbeak (Pheucticus melanocephalus) were at the bird feeder. (A female is sitting on the right side of the tube feeder above.) They have spent the winter in Mexico or Central America and now they are headed north. They may nest somewhere near-by or they may migrate all the way up to British Columbia, Canada.

It's rewarding to know that they can find our oasis of habitat in the sprawling suburbs of Los Angeles. For more than ten years, black-headed grosbeaks have been stopping here for food and water as they pass through in April and then again in late July or August as they head south. I know this because I keep track in a bird journal.

Especially when the California hillsides are dryer than they should be, our yard provides food, water, and shelter for these migrants to stop and rest for a few days. 

The birds who live here year round are nesting. The native plants are providing nectar for at least four nesting Allen's hummingbirds. 

These Allen's hummingbird chicks hatched on April 10th. (The nest wasn't finished when the first egg was laid.) If you look closely you can see the bits of eggshell inside the nest cup just to the left and above the naked chick.

Two full days old and the chicks still have closed eyes, but they raise their little beaks to be fed whenever a shadow falls across the nest. (See the tiny beak raised for food.) This nest is on our patio. 

Another female nesting in a native hollyleaf cherry shrub in the front yard urged her fully feather chicks to fly on April 10th. (She has been successfully nesting in our yard for several years.)

So far in 2021 we've had four Allen's hummingbird nesting attempts. Two were successful - one with one chick and the other with two chicks.

Creating wildlife habitat is vital for migrating and nesting birds. Too much of their native habitat has been developed and changed. We have watched our yard transform from a sterile suburban yard to a small wildlife reserve. Birds in California face a huge loss of habitat due to development and climate change. You can make a difference with native plants and water.

Hummingbird Egg Laid Today

I'm always happy when I find a new Allen's hummingbird nest. I know this egg was laid this morning because it wasn't there yesterday. A second egg will probably be laid tomorrow or the next day. It typically takes 19 days for them to hatch.

Allen's hummingbird nest P1-3/22/2021

This nest is actually last year's patio nest refurbished. The nest is a bit incomplete and even unstable, but that is a trait of this female. She is a bit haphazard in her building and her mothering. I knew she was rebuilding the nest, but it didn't seem finished. The egg this morning caught me by surprise.

This female was successful with her first nest last year. The second attempt both chicks perished just after hatching and the third attempt came too late in the season. The chicks did not survive the multiple days of temperatures over 100 degrees that we had in late June into July. Despite our attempts to provide shade, the heat was too much.

We've had two nesting attempts by other Allen's hummingbirds this season. One chick successfully fledged on March 14th. The other nest with two chicks was taken by an unknown predator. March is typically when second nesting attempts are started, but we are way behind the 5 successful chicks by March 2019. Nests 2019

The weather has been cold. Most females have waited to nest.

I discovered a fourth nest a few days ago, in a location also previously used. This female has a type "A" personality. Her nest is pristine. She was on the nest constantly for the past four days. She was keeping hatchlings warm in our cooler than usual weather. So on this first Monday in spring - one hummingbird egg and two tiny chicks. 

Spotting hummingbird nests 

Allen's Hummingbird Nest Taking Form

It isn't the prettiest nest, but this Allen's hummingbird is on day 8 of building her nest.

Allen's hummingbird nest on wisteria vine 3/15/2020

Three other Allen's females fledged their chicks between Feb. 27 and March 7th. The dry weather helped the five viable eggs all hatch and five chicks successfully flew from the nests. (Two pairs and one singleton)

This nest is part of the second round of chicks in 2020. It is nice to watch a positive bit of life happening in the yard.

So far 2020 is a much more productive year. 
The girls were challenged in 2019. 
The chicks of 2018 

Rescuing a baby hummingbird

Second Nesting Attempts by Allen's Hummingbirds

While most birds are working on their first nests of spring, the Allen's hummingbirds in our yard are on round two.

This nest has two newly laid eggs. It isn't the best constructed nest, but it is in a shaded and protected location. The novice female hasn't been sitting on the nest as much as the more experienced moms.

The female in the front yard has been the only mother to successfully bring two chicks to fledging. See her first chicks just before they flew. Now she's back on the same nest with two new eggs. Last year her second nest was in a different location and nearly lost to the sun.

The nest on the patio successfully produced one fledgling. (The second chick died a day after our big wind storm. Amazingly the survivor lived for a week beside it's desiccated sibling. We considered trying to remove the dead chick, but the location of the nest made that difficult. The survivor was developed enough to try to escape and there was nothing, but cement, 12 ft beneath the nest. Ultimately, it was the right choice; the surviving chick is flying around the yard.)

In the canyon part of the yard, we discovered a nest with two healthy chicks just after they had hatched. The two chicks are just starting to develop their elongated hummingbird beaks. You can just see the second chick's beak at the left side of the nest. These two should be flying in a week and a half to two weeks.

So far this year all of the nests have been in our native Catalina cherry and its mainland relative the hollyleaf cherry. Only the patio nest was not in these specific plants. That is our key to having so many hummingbird nests in our yard–native shrubs. The growing pattern of the plants match the needs of the hummingbirds. Native plants also flower when the hummingbird mothers need food.

If you are keeping track, in 2019 so far, we've had :

• 8 nests
• one pair and three singleton Allen's hummingbird chicks successfully fledged - total of 5
• 2 chicks currently in a nest
• 4 eggs still being incubated 

Rescuing hummingbird chicks

Nesting Allen's Hummingbirds Spring 2019

This nest of Allen's hummingbirds are nearly ready to fledge.
These two little guys should take their first flights in the next 3-5 days.

It is hard for Cornell University to imagine, but this is our third nest of Allen's hummingbirds this 2019 season. (We enter data on our nesting birds in Cornell's NestWatch data base.) The first eggs were laid in a poorly placed nest in early January. That nest was completely soaked in a rain storm and failed. 

2nd nest with one chick

The second nest was established by a more experienced female and she was able to raise one chick to fledge on March 9th. The second egg never hatched. A record cold February may have played a role.

Another chick in a fourth nest hatched on March 16th, its sibling should hatch sometime today.

All of these Allen's hummingbird nests are in native hollyleaf cherry shrubs. The plant is slow growing. It's wide leaves are waxy to survive in hot dry summer temperatures and therefore provide protection when it does rain.

The first female, however, has taken a bold step and built her second nest under the protection of the patio. Anna's hummingbirds build nests on man-made objects fairly frequently. It is rather unusual for our Allen's hummingbirds. She has two eggs in her new nest.

This location should be protected from wind, rain, and even most predators. The biggest issue may be that when chicks first start to flap their wings, they won't have neighboring branches to flutter to. They won't be able to sidestep back to the nest. The location is also about 20 ft off the ground. That is a long way for a curious youngster to fall.
 
Have you lost count? In 2019, so far:

• 5 nests
• 1 successfully fledged Allen's hummingbird
• 4 chicks currently in nests
• 2 eggs still being incubated

Unexpected fluctuations in weather can cause nests to fail. Strong wind, pounding rain, cold snaps, can all take a toll on young hummingbirds. A rain storm is expected on Wednesday. Hopefully it will be lite. A heavy rain could make the first days of flying and survival without the protection of the nest a challenge for these youngsters.

The half siblings of these chicks from 2018 
Climate change and hummingbirds 

Are You Watching a Hummingbird Nest?

Allen's hummingbird female

It is the last day of April and we have four active Allen's hummingbird nests in our yard. (Selasphorus sasin)

Two nests have eggs. 

Allen's hum nest in butterfly bush

Allen's hum nest high in Catalina cherry

One is in an ornamental butterfly bush (Buddleja). This nest is awfully low to the ground and poorly covered by vegetation. It is not a good location and the female will need good fortune to be successful. Her chicks may be vulnerable if summer temperatures over 100 degrees come early.

The other is high in a native Catalina cherry shrub (Prunus illcifolia). This is an excellent location.

Allen's hum chicks, 10-15 days old

'Fairy Tree' nest with hum chicks

Two of the nests have chicks. The 'Fairy Tree' nest has already seen two chicks fledge in March. The female rebuilt the nest and these two should fledge toward the end of May. 

This mother is experienced and has used this Catalina cherry as a successful location in the past.

Allen's hum nest in toyon

The fourth nest is in a native toyon.  (Are you seeing a pattern? Native shrubs are more likely to house successful hummingbird nests.)

Native plants not only provide native insects as food, they also grow at a rate similar to the growth of the chicks. Nests in fast growing ornamental plants sometimes are torn apart by the growing plant. The chicks can become homeless before they are ready to fly.

These two chicks, yes there are two tucked in close together, should fledge soon.

These four mother Allen's hummingbirds are busy. This is the second nest of the year for each of them. Two were successful the first time and two were not.

So far in 2018 that's eight Allen's hummingbird nests in our yard. I monitor my hummingbird nests for NestWatch, part of Cornell University's Citizen Science bird data program. To date, my Allen's hummingbirds are the only nests where data has been collected on the reproduction of this species in 2018. 

I know there are more of you out there watching hummingbird nests. NestWatch needs your data. Successes and failures are equally important. This year we had eggs that shriveled and a chick that died when the weather turned from unusually warm back to cold winter weather. 

Early nesting attempts can lead to failure. This is the insidious impact of warming winter temperatures. Plants and animals take signals from the weather to begin reproduction. Record warm temperatures in January can lead to chick deaths when February brings a return to cold weather and rain.

How do I spot the nests? I watch the females:

• Females gathering nesting materials will fly right back to their building locations. I put out natural nesting materials.
• Females sitting in one place with their beak angled down and making an up-and-down movement with their head are most likely nest building or feeding chicks.
• Females catching small flying insects are typically craving protein because they are about to lay or have laid eggs or are gathering protein for newly hatched chicks. Watch where they go. 
• When eggs or chicks are present females typically do not fly directly to a nest. They fly to the home bush or tree, then make several short movements approaching the nest.

Several friends, especially those on the Pacific Coast hummingbird migratory path, have told me they are seeing far fewer hummingbirds. Data will help figure out if these birds have changed their migratory path or if their numbers are declining.

Join me.  Collect data on your hummingbirds for eBird and NestWatch. The greater the data, the better the science. 

What to do with a baby bird? 

Great Backyard Bird Count 2014 Bigger Than Ever

Last weekend, people around the world counted birds in their backyards, local parks, neighborhoods and wildlife areas. India turned out a large number of people submitting this year. In total, 132,656 observation lists have been submitted as of today. The last day to submit lists from the Feb. 14-17 Great Backyard Bird Count is Feb. 28th.

It was fascinating to watch the world map on the GBBC website as lists were turned in and their location marked. As I watched, someone in Australia posted their list. There were observers in Iceland, several lists from New Zealand, multiple locations in Africa; people all over the world providing science with a snapshot of bird numbers and activity. Check out the GBBC map.

Malibu Lagoon State Park

I went out to Malibu Lagoon one morning and to Santa Barbara the next. It was a beautiful weekend for spending time outside. Several of us saw a peregrine falcon at Malibu Lagoon and the best sighting at the estuary wildlife refuge in Santa Barbara was two pairs of greater scaups.

My favorite birds this weekend, however, were in my own backyard. The Allen's hummingbird babies are feathering out. It won't be long before they start trying out their wings.

We found their nest in January.

And this weekend I spotted a second hummingbird nest. This female Allen's is sitting on two white eggs. The warm weather in California may bring us a series of nesting hummingbirds this year.

Allen's hummingbird on nest

Now that you've counted birds for the Great Backyard Bird Count, think about FeederWatch or eBird. 

• FeederWatch: Count birds in your backyard two consecutive days every week or bi-weekly, Nov. - April.
• eBird: Count birds where and whenever you see them and enter your lists in the largest citizen scientist database in the world.