Thursday, November 19, 2020


Chapala Birders Newsletter October 2, 2020
100 Species sighted around the Lake in September
The list of species is shown at the end of this newsletter.

Early October is the time of fall flowers and migrating hummingbirds. The best places we recommend for viewing these are around Tapalpa and on the Rosa Amarilla Loop.

Interesting observations during September:

-- Migrating Dickcissels were spotted by Nicola Cendron on the Dike at the east end of the Lake, also 40 Black Terns, an unusual number of this migrating species.

-- John saw a Ruby-throated Hummingbird on migration at the Pumping Station.

-- This has been a good season for spotting Blue-black Grassquits at all the favorite birding locations at our end of the lake. We came across seemingly dozens of this species when we ventured further afield to Presa la Vega.
October Big Day
Once again eBird is promoting another "Big Day" event on Saturday October 17. These events are planned every spring and fall to promote birding in general and the use of eBird. People are encouraged to do as much birding as they can over the 24-hour period and then report the results on eBird. In 2019 over 20,000 people took part in this event world-wide. We ourselves will be out there in the field on the 17th.
Christmas Bird Count in December
Our two local Christmas Bird Counts will be conducted this year on Tuesday Dec. 15 for the Ajijic area, and on Thursday Dec. 17 for the Dike at the east end of Lake. We will follow whatever government protocols for Covid virus control are in force at the time. Look for registration details in the December 2 newsletter.
Featured Bird: Black-vented Oriole
Black-vented Oriole photo by Mexican birder Raul Padilla.
The Black-vented Oriole is a year-round resident in our area, breeding in palm trees in Ajijic.

-- It is found Mexico, Guatemala, Honduras and Nicaragua.

-- Adults of both sexes look the same.

-- The nest is built like a hammock hanging under a palm branch. The female lays 3 to 4 eggs and does all the incubating which takes 13 days, which is followed by 20 days of feeding the chicks before fledging.

-- The primary food source is insects and spiders, supplemented by berries and fruits in season, as well as nectar. Orioles in general have sharp points on their bills to pierce the sides of flowers to obtain nectar.

-- This species seems particularly susceptible to brood parasitism by Bronzed Cowbirds, as we have seen more than once an adult feeding a large brown immature cowbird.Text Link
Bird-walks and Trips
Unfortunately, we have not been scheduling any Bird-walks or any Birding Trips for Chapala Birders, due to the ongoing Covid restrictions.
Monthly Sightings List
Here are the 100 species sighted around Lake Chapala in September:

Ani, groove-billed
Blackbird, yellow-headed (Ca)
Bobwhite, northern (Ps,Ca)
Caracara, crested
Chat, yellow-bellied
Coot, American
Cormorant, neotropic
Cowbird, bronzed
Cowbird, brown-headed
Dickcissel (Ds)
Dove, common ground
Dove, Eurasian collared
Dove, Inca
Dove, white-tipped
Duck, black-bellied whistling
Duck, Mexican
Duck, Ruddy (Ca)
Egret, cattle
Egret, great
Egret, snowy
Finch, house
Flycatcher, ash-throated
Flycatcher, social
Flycatcher, vermillion
Gallinule, common
Gnatcatcher, blue-gray
Goldfinch, lesser
Grackle, great-tailed
Grassquit, blue-black (Ps,Ca,Ds)
Grebe, pied-billed
Grosbeak, black-headed
Grosbeak, blue
Harrier, northern (Ds)
Heron, black-crowned night
Heron, great blue
Heron, green
Heron, little blue (Ds)
Heron, tri-colored (Ca)
Hummingbird, berylline
Hummingbird, broad-billed
Hummingbird, ruby-throated (Ps)
Hummingbird, violet-crowned
Ibis, white-faced
Jacana, northern
Kestrel, American
Kingbird, Cassin's
Kingbird, thick-billed
Kingbird, tropical
Kingfisher, belted (Ch)
Kingfisher, green (Ds)
Kiskadee, great
Kite, white-tailed (Ps)
Mockingbird, blue
Nightjar, buff-collared (Av)
Oriole, black-backed (Ds)
Oriole, black-vented
Oriole, orchard (Ca,Ds)
Oriole, streak-backed
Osprey (Ps,Ds)
Owl, great horned (Av)
Parakeet, monk
Pelican, American white (Ca,Ds)
Pewee, greater (Ca)
Pigeon, rock
Redstart, American (Ds)
Robin, rufous-backed
Sandpiper, spotted (Ds)
Seedeater, cinnamon-rumped
Shrike, loggerhead
Sparrow, Botteri's (Ra)
Sparrow, house
Sparrow, lark
Sparrow, rusty-crowned ground
Sparrow, stripe-headed
Stork, wood (Ca,Ra)
Swallow, barn
Swallow, cliff (Ds)
Swift, Vauxs (Ch)
Teal, blue-winged
Teal, green-winged
Tern, black (Ds)
Tern, Foster's (Ds0
Thrasher, curve-billed
Towhee, canyon
Tyrannulet, northern beardless (Ps)
Vulture, black
Warbler, Nashville
Warbler, Wilson's
Warbler, yellow
Warbler, yellow-rumped
Woodpecker, golden-fronted
Woodpecker, ladder-backed
Wren, Bewick's
Wren, canyon
Wren, happy
Wren, Sinaloa (Ch)
Wren, spotted
Yellowlegs, greater (Ds)
Yellowlegs, lesser (Ds)
Sighting Location codes:

Ac - Ajijic: La Cristina/El Bajio
At - Trails above Ajijic
Av - Ajijic village
Ca - Lake Cajititlan & marsh
Ch - Chapala
Cu - Cuitzeo/Ocotlan
Dm - Dike: Jamay to Malteraña
Dp - Dike: Maltaraña to La Palma
Hv - Hidden Valley oak forest
Ja - Jamay
La - La Cañada-Hidden Valley
Jo - Jocotepec
Ld - Lerma & Duero rivers
Pe - Petatan area
Ps - Pumping Station/Santa Cruz
Pt - San Pedro Tesistan area
Pz - San Pedro Itzican area
Ra - Rosa Amarilla loop
Rc - Santa Rosa/Carnero dam
Rp - Riberas del Pilar & canyon
Sa - San Antonio/Allen Lloyd Trail
Sc - San Juan Cosala
Sn - San Nicholas/Golf Club
Tz - Tizapan canyon
Te - San Juan Tecomatlan/Mezcala
Tr - Las Trojes/oak forest
Tu - Tuxcueca/San Luis Soyatlan
Xt - Ixtlahuacan/Las Campanillas

Lake Chapala Birders is an informal group of bird observers led by John and Rosemary Keeling.

We like to hear of bird sightings at:

Check our website:
Lake Chapala Birders | Callejon al Tepalo #140, Ajijic, Jalisco 45920 Mexico
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