Wednesday, March 30, 2011

Naturalist Notes: Rufous-shafted Woodstar hummingbird


The Rufous-shafted Woodstar hummingbird is one of the smallest birds in Trinidad. It measures just 2.75 inches in length, similar in size to the Tufted Coquette.

This species is extremely rare. In the past I have only seen them the in dry season at Asa Wright Nature Center, during the months of March through May. They hardly ever visit the hummingbird feeders, spending most of their time in the forest feeding on flowers. It is indeed one of the shyest species of hummingbirds and very little is known about them. Like the Tufted Coquette it is often times confused with a large Bee!


© Denise Etienne 


Thursday, March 24, 2011

Naturalist Notes: White-tailed Sabrewing Hummingbird


Out of the seventeen species of hummingbirds recorded for Trinidad and Tobago, the White-tailed Sabrewing hummingbird is the only species found in Tobago and not Trinidad.

This species was believed to be extinct after Hurricane Flora hit Tobago in 1963, but has since made a great recovery.

A few years ago we went birding in Tobago for the first time. We were lucky enough to meet up with a researcher who was studying these hummingbirds on the islands. With much anticipation, we took a hike up to Gilpin Trace, after about twenty minutes or some of walking we stopped for a bit. Suddenly a large hummingbird zoomed passed us, like most species it appeared fearless and inquisitive, and no doubt it was indeed the White-tailed Sabrewing!



© Denise Etienne 

Wednesday, March 16, 2011

Naturalist Notes: Blue-chinned Sapphire Hummingbird

My favorite hummingbird is the Blue-chinned Sapphire. To me they seem unlike most hummingbirds, in that this species is extremely timid.  In all my years as a naturalist I have never observed them chasing off, or aggressively defending their territory from others. In fact, they are the ones often bullied and harassed, this may explain why they hardly ever hang around.

This remarkable species has a sparkling blue-chinned, which seems even more metallic in the sunlight. The males throat and chest is shimmering green, both sexes have white thigh feathers. The Blue-chinned Sapphire can sometimes be confused with the Copper-rumped hummingbird, but lacks the coppery color.

Whenever I see a Blue-chinned Sapphire it always puts a smile on my face.


© Denise Etienne 

Wednesday, March 9, 2011

Naturalist Notes: Ruby Topaz Hummingbird


The Ruby Topaz hummingbird is found in both Trinidad and Tobago. In Trinidad, they are often observed in rural areas, and are also known to make their way to higher elevations in the forest when food is scarce.

While visiting Tobago a few years ago, we stayed at a place called Adventure Farms, owned and run by a wonderful couple Ean and Marion Mackay. We saw over twelve male Ruby Topaz hummingbirds vying for a few feeders, it was just amazing! Normally just seeing one of these extraordinary males takes my breath away, so imagine seeing this many, I was literally gasping….

The males are quite distinctive and very flamboyant. He has an iridescent ruby head and nape, with a golden-orange throat and breast. Sometimes he appears black, but once the sunlight hits him, he’s in full glory, indeed quite spectacular! The female Ruby Topaz, like most hummingbirds, is not as colorful as their male counterparts. She is mainly bronze green and gray. They are just 3.5 inches in length. 


© Denise Etienne 
 

Wednesday, March 2, 2011

Naturalist Notes: White-necked Jacobin Hummingbird


The White-necked Jacobin hummingbird is considered one of the more aggressive species in Trinidad. They are usually found at higher elevations in the forest, seldom seen in the lowlands. It is also observed in Tobago.

 This is a sexually dimorphic species. The males have immaculate white feathers on their nape, stomach and tail, while the rest of their body is bluish and greenish in color. The females look totally different, they are generally greenish in color with a speckled throat. She easily goes unnoticed. They are just about 4.5 inches in length.

 One of the amazing things I’ve observed about this species is that when they are sipping sugar solution from hummingbird feeders, the males hardly ever perch to feed! They mostly remain hovering in front of the feeder. I somehow believe this is their way of being readily agile to defend their territory from other species. So next time you happen to see a White-necked Jacobin look closer you might be surprised! 

© Denise Etienne