Jul 302016
 

Hummingbird Census

Hummingbird census July 2016 in my backyard.

Photos were taken on the 19th from 1 to 4:30 PM.

This table summarizes my findings, a total of 113 individuals visited my patio.

results

results

2016 Male Anna’s AHY — 29

ANHU male AHY

ANHU male AHY

2016 Male Anna’s HY — 31

ANHU male HY a

ANHU male HY a

ANHU male HY b

ANHU male HY b

2016 Female Anna’s — 35

ANHU F matrix a

ANHU F matrix a

ANHU F matrix b

ANHU F matrix b

2016 Black-chinned Hummingbird — 15

BCHU matrix

BCHU matrix

2016 Rufous Hummingbird — 3

RUHU matrix

RUHU matrix

Hummingbird Census July 2015 in My Backyard

This is my third hummingbird census. With each successive shoot, the more surprised I am.

Photos are taken on two consecutive days over a four hour period each day (July 4th and 5th).

This table summarizes my findings, a total of 107 individuals visited my patio.

census 1507

census 1507

36 birds were caught in both photo shoots while the remainder were seen in only one of the sessions.

The first two composites consists of all Anna’s Hummingbirds (ANHU) after hatch year males (AHYM).

1507 Hummingbird Census

1507 Hummingbird Census

I catch most individuals twice in a four hour period.

Bird #24 (bottom right of this composite) starts a new series.

These birds are in order by time of day, notice I was getting more iridescence later in the afternoon.

Hummingbird Census 1507

Hummingbird Census 1507

Hatch year males look very much like mom and their sister, so lumped them together.

These are all Anna’s Hummingbirds, ANHU other.

Hummingbird Census July 2015

Hummingbird Census July 2015

The distinguishing mark on all these birds is the post ocular spot, the white feathers behind the eye.

Hummingbird Census July 2015

Hummingbird Census July 2015

Based on the way the counts came in, I am fairly sure that many of these are migration visitors.

Hummingbird Census July 2015

Hummingbird Census July 2015

The last row of this panel starts the Black-chinned Hummingbird after hatch year males, BCHU AHYM.

Hummingbird Census July 2015

Hummingbird Census July 2015

This is the first time I have caught Black-chinned in molt.

The white stubble that you see are sheaths covering new feathers.

Hummingbird Census 2015

Hummingbird Census 2015

As with Anna’s, the hatch year Black-chinned males look similar to their moms and sisters.

Hummingbird Census 2015

Hummingbird Census 2015

Since I only captured 107 individuals I had to fill in the blank.

Hummingbird Census 2015

Hummingbird Census 2015

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