Do you know more about El Coyote. All I found online is a ranch that breeds Longhorns.
Yes, correct.
Just the owner has been a long supporter of the black rhino program / IRF for southern subspecies. Has held the subspecies since early importation and till date has had the most breeding success (apart from Fort Worth or Milwaukee) in the US.
There are according to the website 18 participants (past/present???) in the program.
Past holders in US might included (all the data below are from 2013 no later):
Abilene Zoological Gardens (2.0, CB Fort Worth Uhuru CB 2001 - El Coyote Macho Jr. CB 2004), Austin Natural Science Center (2.0 CB White Oak - Dallas), Chehaw Wild Animal Park (2.0 CB El Coyote), Disney AK (3.1 CB McAllen - El Coyote and their 2.0 offspring born at Disney AK), El Coyote (2.5, 1.2 old Zimbabwe imports and their 01 1989 calf + 0.2 born 1998, 200 and a CB male from Milwaukee), Fort Worth (1.2, CB San Diego Zoo, McAllen + El Coyote M Limpopo, FF Mtoto and Salsa), Fossil Rim (1.2 0.1 WB Zimbabwe Coco, M/F breeding pair Kusamona x Mupani), Milwaukee (1.1 WB Zimbabwe BrewsterxChirundu/Mimi) and White Oak (3.2, Chirundu/Lee, Tom C (CB White Oak), F Pombe, F/M Onyx and Micky).
Puebla, Mexico have a CB Fort Worth male Muke.
Australia is in with the WPZ in Dubbo (5.5) and Monarto (2.0) as well as in Europe - Frankfurt Zoo with elderly F Tsororo (WB Zimbabwe).
Mind all: the above figures are seriously out of date and quite a few individuals have changed hands since or are no more. I have not followed the US IRF southern black rhino program that closely, but what I do know is listed below:
CURRENT:
Milwaukee: 0.0.
M Brewster was euthanised 19/3/2016 and F Mimi has recently passed away 23/4/2020.
Fort Worth: 2.1
F Mtoto (WB 1989, probably to old to breed now), M Travis (22) and 6-year old Crockett.
Fossil Rim: 1.3
F Coco (has had 4 calves till date), F Salsa (24, who previously resided at Fort Worth since 2012), F Mupani (21) and new male Uhuru (unproven - 2015, CB Fort Worth and previously resided at Abilene).
White Oak: 2.1?
old male Lee/Chirundu with a new breeding pair (TysonxLittle Bit) imported in 2014 from South Africa. First calf in 2019, unfortunately passed away several months later. Has potential!
El Coyote: 1.2.1++?
Abilene: 1.0?
Chehaw: 1.0?
Disney AK: ???