The common yellowthroat and yellow-breasted chat are still found in small isolated populations. Females have a grey wash to the head not shown by common yellowthroat. Altamira yellowthroat (Geothlypis flavovelata) and crimson-collared grosbeak (Rhodothraupis celaeno). For example common yellowthroat, Belding's yellowthroat, Altamira yellowthroat, and Bahama yellowthroat are sometimes considered conspecific. The common yellowthroat ("Geothlypis trichas") is a New World warbler. The Bahama yellowthroat ("Geothlypis rostrata") is a New World warbler. The masked yellowthroat ("Geothlypis aequinoctialis") is a New World warbler. Altamira yellowthroat ("Geothlypis flavovelata"), and Tamaulipas crow ("Corvus imparatus"). It is similar to Altamira yellowthroat, but separated from it by the width of Mexico. The black-polled yellowthroat ("Geothlypis speciosa") is a species of bird in the family Parulidae. Belding's yellowthroat ("Geothlypis beldingi") is a New World warbler. The hooded yellowthroat ("Geothlypis nelsoni") is a species of bird in the family Parulidae. The masked yellowthroat is usually seen in pairs, and does not associate with other species. Conversely masked yellowthroat can be split to three or even four species. Belding's yellowthroat ("Geothlypis beldingi" ) was named in his honor by Robert Ridgway.