Río Embudo Birds

Spring/Fall Migration:

Who Is Arriving, When? I have been paying close attention to the presence of bird species in the Embudo area for more than 20 years. I have pulled together all of my records and consulted other sources such as records from eBird to come up with some preliminary "first" and "last" dates for the summer residents and transient species.

The graphs are from downloadable PDFs. (Click to display in the browser, right click to download.) Both files show arrival and departure information for the Common and Less Common species in our area.

The first file shows the approximate time period that each species is present in the Embudo area. The second file is the same information, but ordered by the arrival date for each species.

Though not depicted in the graph, the peak of the Spring migration is around the 2nd week of May. This is discussed in a blog entry from last year entitled: Spring Migration Peak Detection: May, 2014

Another entry discusses a Migration Fallout the morning after a midlle-of-the-night snow storm last may. The storm forced down migrants flying at night.

Two migrant flycatchers:

The Black Phoebe and the Say's Phoebe are usually the first migrants to be seen in Dixon each year. This Say's Phoebe was in Rinconada in 2008:
Usually seen in agricultural fields, you may hear its plaintive down-slurred "pee-your" or if you are close enough "pit-pee-your". This species often nests under portales and in carports. Look for it on fences flying out in small circles to grab an insect before returning to its original perch.

This Black Phoebe was on the Rio Embudo on April 24th, 2016 giving its two-note, bright "pit-WHIT":
Unlike the Say's Phobe, the Black Phoebe is associated with water, regularly perching on low branches a foot or two above the water. It makes its living "hawking" insects above the surface of the river.

The Turkey Vultures return from South America:

The group of about 20 Turkey Vultures that spend the summer in Dixon always arrive by April 1st each spring. The common western sub-species of Turkey Vulture (Cathartes aura meridionalis) are long-distance migrants. The majority of them migrate all the way to the northern part of South America, wintering in Colombia and Venezuela. Others stop short in Panama.

Here is a map showing known migration routes of this Turkey Vulture sub-species:Source: R. Templeton (Based on a variety of sources including Satellite Telemetry data from Hawk Moutain's Acopian Center for Conservation Learning)

This Turkey Vulture was over Dixon on September 13, 2016. Each year, the vultures leave before October: Without radio-tagging some of the local vultures, there is no way to know exactly where this particular group goes in the winter, but is highly probable that they make the long trek to Colombia and Venezuela.

Learning the Birds
of the
Río Embudo

A set of tools to help you learn the local birds.

A collection of lists with photos, range maps and other resources, grouped by season.

Within each season, the lists begin with the most common and familiar species, then move to the less familiar.

Click Here to get started.
Read the Overview.
Read about the Seasonal Timing.
Robert's Legacy Birding Blog

Dixon CBC Indentification Practice:

Of the 111 Species that have been recorded on the Dixon CBC, just 32 of those species account for more than 95% of the individuals counted.

The learning begins with those species that are seen every year. Many of these are very common species. Once those are mastered, one can move on to the species less likely to be seen.

Five different exercises for using the materials are described.

You may know more than you think! Click Here to get started.