Declension table of ?kṛṣṇapakṣika

Masculine	Singular	Dual	Plural
Nominative	kṛṣṇapakṣikaḥ	kṛṣṇapakṣikau	kṛṣṇapakṣikāḥ
Vocative	kṛṣṇapakṣika	kṛṣṇapakṣikau	kṛṣṇapakṣikāḥ
Accusative	kṛṣṇapakṣikam	kṛṣṇapakṣikau	kṛṣṇapakṣikān
Instrumental	kṛṣṇapakṣikeṇa	kṛṣṇapakṣikābhyām	kṛṣṇapakṣikaiḥ kṛṣṇapakṣikebhiḥ
Dative	kṛṣṇapakṣikāya	kṛṣṇapakṣikābhyām	kṛṣṇapakṣikebhyaḥ
Ablative	kṛṣṇapakṣikāt	kṛṣṇapakṣikābhyām	kṛṣṇapakṣikebhyaḥ
Genitive	kṛṣṇapakṣikasya	kṛṣṇapakṣikayoḥ	kṛṣṇapakṣikāṇām
Locative	kṛṣṇapakṣike	kṛṣṇapakṣikayoḥ	kṛṣṇapakṣikeṣu

Compound kṛṣṇapakṣika -

Adverb -kṛṣṇapakṣikam -kṛṣṇapakṣikāt