Evening Grosbeaks

An evening grosbeak perches on a branch of a chinese pistache tree, Sunnyvale CA.
An evening grosbeak perches on a branch of a chinese pistache tree, Sunnyvale CA.

I recently finished processing a series of photos I took of a flock of evening grosbeaks that invaded a neighborhood in Sunnyvale, CA, a little south of my home. For several days, the birds were repeating a pattern of flying into the area in the morning, and perching on a row of chinese pistache trees, so I decided to head down and see if I could locate the flock.

I arrived in the neighborhood just after dawn when I figured the birds would be busy eating. I began to walk up and down the streets, occasionally stopping to listen for the distinct crunching sound of the birds eating the fruit off of the trees. All the while I was under the watchful eyes of the residents, who probably don’t often see someone walking past their house with an 800mm lens mounted to a large tripod.

An evening grosbeak perches on a branch of a chinese pistache tree and eats a small seed, Sunnyvale CA.
An evening grosbeak perches on a branch of a chinese pistache tree and eats a small seed, Sunnyvale CA.

Finally, I was on the verge of giving up and decided to make my way back to my car. On my way back, I passed under one of the many chinese pistache trees and heard the soft crunch crunch crunch. Looking up I could just see one or two of the grosbeaks in the upper most branches. Thrilled, I set up my gear on the sunny side of the tree (so that the birds would be front lit), and waited until some of them ventured to lower fruit.

An evening grosbeak reaches for food on the branches on a chinese pistache tree, Sunnyvale, CA.
An evening grosbeak reaches for food on the branches on a Chinese pistache tree, Sunnyvale, CA.

In all I hung out for about 20 minutes before the birds lifted off and flew elsewhere. It is always a treat to get such opportunities to photograph seasonal migrants.

Evening grosbeak invasion

A male evening grosbeak perches on a chinese pistache tree and feeds on the many small nuts
A male evening grosbeak perches on a chinese pistache tree and feeds on the many small nuts. Canon 800mm f/5.6L IS lens with the EOS-7D. ISO 800. Evaluative metering 0 EV: 1/800 sec. at f/8

This winter, Santa Clara Valley was lucky enough to see several groups of evening grosbeaks take up residence is a couple of predictable locations. Word quickly spread throughout the birding and bird photographer communities. This species is not very common for this area, so it was a first time bird for many who found them (including me!) The grosbeaks returned to the same general area day after day for several months, providing everyone with great viewing and photo opportunities.

A male evening grosbeak perches on a chinese pistache tree next to a small branch full of food to eat
A male evening grosbeak perches on a chinese pistache tree next to a small branch full of food to eat. Canon 800mm f/5.6L IS lens with the EOS-7D. ISO 800. Evaluative metering 0 EV: 1/800 sec. at f/8

These photographs were all taken on the same day on the grounds of a technology firm. (Even the technology parks of Silicon Valley have their share of wildlife!) This particular gross (yes, a group of grosbeaks is called a “gross”) had about 20 females and 3 males. They flew between a number of chinese pistache trees within the same area. Between the flurry of activity and the loud noise of nuts cracking in their beaks, they resembled a swarm of locusts, stripping one tree bare and then moving on to the next.

They would do just about anything to get at the tree’s food. It was amazing to watch them hang almost completely upside-down from a branch in order to reach the nuts. Here a female shows her perching skills.

A female evening grosbeak hangs upside down from a branch of a chinese pistache tree in order to reach some nuts
A female evening grosbeak hangs upside down from a branch of a chinese pistache tree in order to reach some nuts. Canon 800mm f/5.6L IS lens with the EOS-7D. ISO 800. Evaluative metering 0 EV: 1/800 sec. at f/8

Not to be outdone, the males could dangle just as well.

A male evening grosbeak shows off his perching skills
A male evening grosbeak shows off his perching skills. Canon 800mm f/5.6L IS lens with the EOS-7D. ISO 800. Evaluative metering 0 EV: 1/1600 sec. at f/8

Overall, I spent about an hour following these birds from tree to tree. When I finally left, they seemed just as energetic as when I arrived. It was a treat to see this rarity, especially in such numbers.

Copyright 2017 Hank Christensen